Publikationen

 

F.Schüth, R.-A.Eichel, "Umbau des Energiesystems - Energiespeicher für die Zukunft", Physikjournal 10 (2014) 31

Speichertechnologien spielen schon heute im Energie­system eine wichtige Rolle, die sich durch den Ausbau der fluktuierenden erneuerbaren Energiequellen erheblich ändern wird. In einem Beitrag für das Physikjournal (vol. 10, 2014, p. 31), wird das Elektrizitätssystem analysiert und die Rolle von derzeitigen und zukünftigen Technologien elektrochemischer Speicher beleuchtet.

Link

 

Schwerpunktpublikationen:

____________________________________________________________________________________________________

  • S. Foit, I.C. Vinke, L.G.J. de Haart, R.-A. Eichel: “Power-to-Syngas - an enabling technology for the transition of the energy system? Production of tailored synfuels and chemicals using renewably generated electricity”, Angew. Chem. 128 (2016) DOI: 10.1002/anie.201607552
  • J. Wandt, P. Jakes, J. Granwehr, H.A. Gasteiger, R.-A. Eichel: “Singlet Oxygen Formation during the Charging Process of an Aprotic Lithium–Oxygen Battery”, Angew. Chem. 128 (2016) 7006-7009
  • J. Wandt, C. Marino, H.A. Gasteiger, P. Jakes, R.-A. Eichel, J. Granwehr: “Operando electron paramagnetic resonance spectroscopy – formation of mossy lithium on lithium anodes during charge–discharge cycling”, Energy Environ. Sci. 8 (2015) 1358-1367
  • F.Schüth, R.-A. Eichel: "Umbau des Energiesystems - Energiespeicher für die Zukunft", Physikjournal 10 (2014) 31
  • R.-A. Eichel, P. Erhart, P Träskelin, K. Albe, H. Kungl, M.J. Hoffmann: „Formation of copper-oxygen vacancy dipole centers in lead titanate“, Phys. Rev. Lett. 100 (2008) 09550

____________________________________________________________________________________________________

vollständige Publikationsliste

(106) M.F. Graf, H. Tempel, S.S. Köcher, R. Schierholz, C. Scheurer, H. Kungl, R.-A. Eichel, J. Granwehr: “Observing different modes of mobility in lithium titanate spinel by nuclear magnetic resonance”, RSC Adv. (2017) DOI:10.1039/c7ra01622k

(105) L. Kröll, L.G.J. de Haart, I.C. Vinke, R.-A. Eichel: “Degradation Mechanisms in Solid Oxide Fuel and Electrolyzer Cells – Analytical Description of Nickel Agglomeration in a Ni/YSZ Electrode”, Phys. Rev. Appl. 7 (2017) 044007

(104) S. Foit, I.C. Vinke, L.G.J. de Haart, R.-A. Eichel: “Power-to-Syngas - an enabling technology for the transition of the energy system?”, Angew. Chem. Int. Ed. 56 (2017) 5402-5411

(103) S. Foit, I.C. Vinke, L.G.J. de Haart, R.-A. Eichel: “Power-to-Syngas – eine Schlüsseltechnologie für die Umstellung des Energiesystems?”, Angew. Chem. 129 (2017) 5488-5498

(102) P. Jakes, L. Kröll, A. Ozarowski, J. van Tol, D. Mikhailova, H. Ehrenberg, R.-A. Eichel: “Coordination of the Mn4+-Center in Layered Li[Co0.98Mn0.02]O2 Cathode Materials for Lithium-Ion Batteries”, Z. Phys. Chem. 231 (2017) 905-922

(101) S. Yu, A. Mertens, H. Kungl, R. Schierholz, H. Tempel, R.-A. Eichel: “Morphology-Property Relationships of Li3V2(PO4)3/C Cathode Materials Regarding to Rate Capability and Cycle Life in Lithium-Ion Batteries”, Electrochim. Acta 232 (2017) 310-322

(100) C. Chen, D. Li, L Gao, P.P.R.M.L. Harks, R.-A. Eichel, P.H.L. Notten: “Carbon-coated core-shell Li2S@C nanocomposites as high performance cathode material for Lithium-Sulfur batteries” J. Mater. Chem. A 5 (2017) 1428-1433

(99) S. Yu, A. Mertens, R. Schierholz, X. Gao, Ö. Aslanbas, J. Mertens, H. Kungl, H. Tempel, R.-A. Eichel: “An advanced all phosphate lithium-ion battery providing high electrochemical stability, high rate capability and long-term cycling performance", J. Electrochem. Soc. 164 (2017) A370-A379

(98) Y.E. Durmus, Ö. Aslanbas, S.A. Kayser, H. Tempel, F. Hausen, L.G.J. Bert de Haart, J. Granwehr, Y. Ein-Eli, R.-A. Eichel, H. Kungl: “Long run discharge, performance and efficiency of primary Silicon-air cells with alkaline electrolyte”, Electrochim. Acta 225 (2017) 215-224

(97) G. Teucher, T. Van Gestel, M. Krott, H.G. Gehrke, R.-A. Eichel, S. Uhlenbruck: “Processing of Al-doped ZnO protective thin films on aluminum current collectors for lithium ion batteries”, Thin Solid Films 619 (2016) 302-307

(96) S. Kühnhold-Pospischil, P. Saint-Cast, M. Hofmann, P. Jakes, R.-A. Eichel, J. Granwehr: “A study on Si/Al2O3 paramagnetic point defects”, J. Appl. Phys. 120 (2016) 195304

(95) J. Xie, D.L. Danilov, R.-A. Eichel, P.H.L. Notten: “Modeling 3D-Deposition of TiO 2 Using a Monte Carlo Chemical Kinetics Approach”, J. Phys. Chem. C 120 (2016) 23823-23835

(94) P. Jakes, H. Kungl, R. Schierholz, J. Granwehr, R.-A. Eichel: “Hydrogen interstitial defects in acceptor-type CuO-doped PbTiO3 — Uptake and dissolution of water vapor and formation of (Cu-OH) defect complexes”, Appl. Phys. Lett. 109 (2016) 122904

(93) S. Yu, A. Mertens, X. Gao, D.C. Gunduz, R. Schierholz, S. Benning, F. Hausen, J. Mertens, H. Kungl, H. Tempel, R.-A. Eichel: “Influence of microstructure and AlPO4 secondary-phase on the ionic conductivity of Li1.3Al0.3Ti1.7(PO4)3 solid-state electrolyte”, Funct. Mat. Lett. 9 (2016) 1650066

(92) J. Xie, J.F.M. Oudenhoven, D. Li, C. Chen, R.-A. Eichel, P.H.L. Notten: “High Power and High Capacity 3D-Structured TiO2 Electrodes for Lithium-Ion Microbatteries”, J. Electrochem. Soc. 163 (2016) A2385-A2389

(91) S.N. Agbo, T. Merdzhanova, S. Yu, H. Tempel, H. Kungl, R.-A. Eichel, U. Rau, O. Astakhov: “Cell-to-cell monolithic integration of a thin-film solar cell and lithium-ion accumulator”, J. Power Sources (2016) in print

(90) S. Yu, H. Tempel, R. Schierholz, Ö. Aslanbas, X. Gao, J. Mertens, L.G.J. de Haart, H. Kungl, R.-A. Eichel: “LiTi2(PO4)3/C Anode Material with a Spindle-Like Morphology for Batteries with High Rate Capability and Improved Cycle Life”, Chem. Electro. Chem. (2016) DOI: 10.1002/celc.201600125

(89) S.N. Agbo, T. Merdzhanova, S. Yu, H. Tempel, H. Kungl, R.-A. Eichel, U. Rau, O. Astakhov: “Photoelectrochemical application of thin-film silicon triple-junction solar cell in batteries”, Phys. Status Solidi A 213 (2016) 1926-1931

(88) J. Wandt, P. Jakes, J. Granwehr, H.A. Gasteiger, R.-A. Eichel: “Singlet Oxygen Formation during the Charging Process of an Aprotic Lithium–Oxygen Battery”, Angew. Chem. Int. Ed. 55 (2016) 6892-6895

(87) J. Wandt, P. Jakes, J. Granwehr, H.A. Gasteiger, R.-A. Eichel: “Singlet Oxygen Formation during the Charging Process of an Aprotic Lithium–Oxygen Battery”, Angew. Chem. 128 (2016) 7006-7009

(86) A. Mertens, I.C. Vinke, H. Tempel, H. Kungl, L.G.J. de Haart, R.-A. Eichel, J. Granwehr: “Quantitative Analysis of Time-Domain Supported Electrochemical Impedance Spectroscopy Data of Li-Ion Batteries – Reliable Activation Energy Determination at Low Frequencies”, J. Electrochem. Soc. 163 (2016) H521-H527

(85) P. Jakes, J. Granwehr, H. Kungl, R.-A. Eichel: “Mixed Ionic–Electronic Conducting Li4Ti5O12 as Anode Material for Lithium Ion Batteries with Enhanced Rate Capability – Impact of Oxygen Non-Stoichiometry and Aliovalent Mg2+-Doping Studied by Electron Paramagnetic Resonance”, Z. Phys. Chem. 229 (2015) 1439-1450

(84) J. Wandt, C. Marino, H.A. Gasteiger, P. Jakes, R.-A. Eichel, J. Granwehr: “Operando electron paramagnetic resonance spectroscopy – formation of mossy lithium on lithium anodes during charge–discharge cycling”, Energy Environ. Sci. 8 (2015) 1358-1367

(83) V.T. Santana, L. Walmsley, I. Fier, R.-A. Eichel, P. Jakes, I. Chumak, A. Ozarowski, J. van Tol, O.R. Nascimento: “Antiferromagnetic resonance of polycrystalline BiMn2O5 ”, Solid State Commun. 207 (2015) 40-43

(82) Jérôme Ackera,1, Hans Kungla,b,∗, Roland Schierholzb, Susanne Wagnera,Rüdiger-A. Eichelb, Michael J. Hoffmann: “Microstructure of sodium-potassium niobate ceramics sintered under highalkaline vapor pressure atmosphere”, J. Eur. Ceram. Soc. 34 (2014) 4213-4221

(81) L.A. Schmitt, H. Kungl, M. Hinterstein, L. Riekehr, H.J. Kleebe, M.J. Hoffmann, R.-A. Eichel, H. Fuess: “The Impact of Heat Treatment on the Domain Configuration and Strain Behavior in Pb[Zr,Ti]O3 Ferroelectrics”, J. Am. Ceram. Soc. 98 (2015) 269-277

(80) P. Jakes, H. Kungl, R. Schierholz, R.-A. Eichel: “Analyzing the Defect Structure of CuO-Doped PZT and KNN Piezoelectrics From Electron Paramagnetic Resonance”, IEEE Trans. Ultrason. Ferroel. Frequ. Control 61 (2014) 1447-1455

(79) N. Kiziltas-Yavuz, A. Bhaskar, D. Dixon, M. Yavuz, K. Nikolowski, L. Lu, R.-A. Eichel, H. Ehrenberg: "Improving the rate capability of high voltage lithium-ion battery cathode material LiNi0.5Mn1.5O4 by ruthenium doping", J. Power Sources 267 (2014) 533-541

(78) S. Yoon, A.E. Maegli, L. Karvonen, A. Shkabko, S. Populoh, K. Gałazka, L. Sagarna, M.H. Aguirre, P. Jakes, R.-A. Eichel, S.G. Ebbinghaus, S. Pokrant, A. Weidenkaff: “Synthesis, Crystal Structure, Electric and Magnetic Properties of LaVO2.78N0.10 ”, Z. Anorg. Allg. Chem. 640 (2014) 797-804

(77) M.B. Boeddinghaus, W. Klein, B. Wahl, P. Jakes, R.-A. Eichel, T.F. Fässler: "C60 3– versus C60 4– /C60 2– – Synthesis and Characterization of Five Salts Containing Discrete Fullerene Anions", Z. Anorg. Allg. Chem. 640 (2014) 701-712

(76) P. Jakes, J. Zimmermann, H. von Seggern, A. Ozarowski, J. van Tol, R.-A. Eichel: “Eu2+-doped CsBr photostimulable X-ray storage phosphors – analysis of defect structure by high-frequency EPR”, Funct. Mat. Lett. 7 (2014) 1350073

(75) C. Jensen, J. van Slageren, P. Jakes, R.-A. Eichel, Emil Roduner: „Support Effects on Hydrogen Desorption, Isotope Exchange, Chemical Reactivity, and Magnetism of Platinum Nanoclusters in KL Zeolite“, J. Phys. Chem. C 117 (2013) 22732-22745

(74) B. Shvartsev, G. Cohn, H. Shasha, R.-A. Eichel, Y. Ein-Eli: "Reference electrode assembly and its use in the study of fluorohydrogenate ionic liquid silicon electrochemistry", Phys. Chem. Chem. Phys. 15 (2013) 17837-17845

(73) R.-A. Eichel, E. Erdem, P. Jakes, A. Ozarowski, J. van Tol, R.C. Hoffmann, J.J. Schneider: "Space-charge layer, intrinsic 'bulk' and surface complex defects in ZnO nanoparticles - a high-field Electron Paramagnetic Resonance study", Funct. Mat. Lett. 6 (2013) 1330004

(72) R.-A. Eichel*, H. Kungl and P. Jakes: "Defect structure of non-stoichiometric and aliovalently doped perovskite oxides", Mat. Tech. 28 (2013) 241-246

(71) R.-A. Eichel, E. Erünal, P. Jakes, S. Körbel, C. Elsässer, J. Acker, H. Kungl, M.J. Hoffmann: “Interactions of defect complexes and domain walls in CuO-doped ferroelectric (K,Na)NbO3 ”, Appl. Phys. Lett. 102 (2013) 242908

(70) F. Stemme, M. Bruns, H. Geßwein, M. Schroeder, M. Sazegar, M.D. Drahus, R.-A. Eichel, F. Paul, C. Acucena, J.R. Binder: „Fabrication and characterization of iron and fluorine co-doped BST thin films for microwave applications“, J. Mater. Sci. 48 (2013) 3586-3596

(69) R.C. Hoffmann, M. Kaloumenos, S. Heinschke, E. Erdem, P. Jakes, R.-A. Eichel, J.J. Schneider: "Molecular precursor derived and solution processed indium-zinc oxide as a semiconductor in a field-effect transistor device. Towards an improved understanding of semiconductor film composition", J. Mater. Chem. C 1 (2013) 2577-2584

(68) G. Cohn, R.-A. Eichel, Y. Ein-Eli: "New insight into the discharge mechanism of silicon–air batteries using electrochemical impedance spectroscopy", Phys. Chem. Chem. Phys. 15 (2013) 3256-3263

(67) S. Schaab, M. Schulz, H. Fritze, E. Erdem, R.-A. Eichel, C. Rüscher, S. Hummelt, T. Granzow: “Influence of reducing atmosphere on the defect chemistry of lead lanthanum zirconate titanate 8/65/35”, Solid State Ionics 228 (2012) 56-63

(66) M.B. Boeddinghaus, B. Wahl, P. Jakes, R.-A. Eichel, T.F. Fässler*: “Simple synthesis for tetra anionic fullerene ions in solution – synthesis and single crystal X-ray structure determination of three new discrete C60 4−-Salts”, Z. Anorg. Allg. Chem. 638 (2012) 2205-2212

(65) F. Stemme, H. Geßwein, M. Schroeder, M.D. Drahus, M. Sazegar, J.R. Binder, R.-A. Eichel, F. Paul, J. Haußelt, M. Bruns: „Effects of thermal processing and iron doping in co-sputtered barium strontium titanate thin films“, J. Mat. Sci. 47 (2012) 6929-6938

(64) F. Stemme, H. Geßwein, M.D. Drahus, B. Holländer, C. Azucena, J.R. Binder, R.-A. Eichel, J. Haußelt, M. Bruns: „Characterization of non-stoichiometric co-sputtered Ba0.6Sr0.4(Ti1-xFex)1+xO3-δ thin films“, Anal. Bioanal. Chem. 403 (2012) 643-650

(63) E. Erdem, S. Schaab, W. Jo, A. Ozarowski, J. van Tol, R.-A. Eichel: “High-frequency EPR analysis of MnO2-doped [Bi0.5Na0.5]TiO3-BaTiO3 piezoelectric ceramics – manganese oxidation states and materials hardening”, Ferroelectrics 428 (2012) 116-121

(62) P. Jakes, G. Cohn, Y. Ein-Eli, H. Ehrenberg, R.-A. Eichel: „Limitation of discharge capacity and mechanisms of air-electrode deactivation in silicon-air batteries“, Chem. Sus. Chem. 5 (2012) 2278-2285

(61) P. Jakes, R.-A. Eichel: „Characterization of tetravalent vanadium functional centers in metal oxides derived from a spin-Hamiltonian analysis”, Mol. Phys. 110 (2012) 277–282

(60) P. Jakes, N. Blickhan, T. Jekewitz, A. Drochner, H. Vogel, H. Fuess, R.-A. Eichel: “Interplay between defect structure and catalytic activity in the Mo10-xVxOy mixed oxide system”, Chem. Phys. Chem. 12 (2011) 3578-3583

(59) E. Erünal, P. Jakes, S. Körbel, J. Acker, H. Kungl, C. Elsässer, M.J. Hoffmann, R.-A. Eichel: “CuO-doped
NaNbO3 anti-ferroelectrics – impact of aliovalent doping and non-stoichiometry on the defect structure and formation of secondary phases
”, Phys. Rev. B 84 (2011) 184113

(58) M.D. Drahus, P. Jakes, E. Erdem, S. Schaab, J. Chen, M. Ozerov, S. Zvyagin, R.-A. Eichel: “Manganese-doped BiScO 3 -PbTiO 3 high-temperature ferroelectrics – defect structure and mechanism of enhanced electric resistivity”, Phys. Rev. B 84 (2011) 064113

(57) W. Jo, J.B. Ollagnier, J.L. Park, E.M. Anton, O.J. Kwon, C. Park, H.H. Seo, J.S. Lee, E. Erdem, R.-A. Eichel, J. Rödel: “CuO as a Sintering Additive for (Bi1/2Na1/2)TiO3-BaTiO3-(K0.5Na0.5)NbO3 Lead-free Piezoceramics”, J. Eur. Ceram. Soc. 31 (2011) 2107-2117

(56) P. Jakes, E. Erdem, A. Ozarowski, J. van Tol, R. Buckhan, D. Mikhailova, H. Ehrenberg, R.-A. Eichel: “Local coordination of Fe3+ in Li[Co0.98Fe0.02]O2 oxides as cathode material in lithium ion batteries – multi-frequency EPR and Monte-Carlo Newman-superposition analysis”, Phys. Chem. Chem. Phys. 13 (2011) 9344-9352

(55) E. Aksel, P. Jakes, E. Erdem, D.M. Smyth, A. Ozarowski, J. van Tol, J.L. Jones, R.-A. Eichel: “Processing of manganese-doped [Bi0.5Na0.5]TiO3 ferroelectrics – reduction and oxidation reactions during calcination and sintering”, J. Am. Ceram. Soc. 94 (2011) 1363-1367

(54) M.D. Drahus, P. Jakes, E. Erdem, R.-A. Eichel: “Defect structure of the mixed ionic-electronic conducting Sr[Ti,Fe]Ox solid-solution system – change in iron oxidation states and defect complexation”, Solid State Ionics 184 (2011) 47-51

(53) A.K. Srivastava, M. Deepa, K.N. Sood, E. Erdem, R.-A.Eichel: “Shape selective growth of ZnO nanostructures: spectral and electrochemical response”, Adv. Mat. Lett. 2 (2011) 142-147

(52) E. Erdem, P. Jakes, R.-A. Eichel, J. Lin, D. Damjanovic: „Position of defects with respect to domain walls in Fe3+-doped Pb[Zr0.52Ti0.48]O3 piezoelectric ceramics“, Appl. Phys. Lett. 98 (2011) 072907

(51) J. Seiffe, L. Gautero, M. Hofmann, J. Rentsch, R. Preu, S. Weber, R.-A. Eichel: „Surface passivation of crystalline silicon by plasma-enhanced chemical vapor deposition double layers of silicon-rich silicon oxynitride and silicon nitride “, J. Appl. Phys. 109 (2011) 034105

(50) R.-A. Eichel: “Structural and dynamic properties of oxygen vacancies in perovskite oxides – analysis of defect chemistry by modern multi-frequency and pulsed EPR techniques”, Phys. Chem. Chem. Phys. 13 (2011) 368-384

(49) E. Erdem, P. Jakes, S.K.S. Parashar, K. Kiraz, M. Somer, A. Rüdiger, R.-A. Eichel: “Defect structure in aliovalently-doped and isovalently-substituted ferroelectric PbTiO3 nano-powders”, J. Phys. Condens. Matter 22 (2010) 345901

(48) W. Jo, E. Erdem, R.-A. Eichel, J. Glaum, T. Granzow, D. Damjanovic, J. Rödel: „Effect of Nb-donor and Fe-acceptor dopants in (Bi0.5Na0.5)TiO3-BaTiO3-(K0.5Na0.5)NbO3 lead-free piezoceramics“, J. Appl. Phys. 108 (2010) 014110

(47) E. Aksel, E. Erdem, P. Jakes, J.L. Jones, R.-A. Eichel: “Defect structure and materials ’hardening’ in Fe2O3-doped [Bi0.5Na0.5]TiO3 ferroelectrics”, Appl. Phys. Lett. 97 (2010) 012903

(46) J.J. Schneider, R.C. Hoffmann, J. Engstler, A. Klyszcz, E. Erdem, P. Jakes, R.-A. Eichel, L. Pitta-Bauermann, J. Bill: „Synthesis, Characterization, Defect Chemistry, and FET Properties of Microwave-Derived Nanoscaled Zinc Oxide”, Chem. Mater. 22 (2010) 2203-2212

(45) E. Erdem, P. Jakes, R.-A. Eichel, D.I. Woodward, I.M. Reaney: „Formation of (Ti’-VO ••) defect associates in BaTiO3 ceramics heat-treated under reduced oxygen partial pressure conditions“, Funct. Mat. Lett. 3 (2010) 65-68

(44) E. Erünal, S. Körbel, C. Elsässer, J. Acker, H. Kungl, M.J. Hoffmann, R.-A. Eichel: “Defect structure of copper-doped potassium niobate ceramics”, Funct. Mat. Lett. 3 (2010) 19-24

(43) R.-A. Eichel, H. Kungl: „Recent Developments and Future Perspectives of Lead-Free Ferroelectrics”, Funct. Mat. Lett. 3 (2010) 1-4

(42) E. Erdem, R.-A. Eichel, C. Fetzer, I. Dezsi, S. Lauterbach, H.-J. Kleebe, S. Hummelt, A.G. Balogh: “Structure, Fe-solubility and symmetry in acceptor-doped PZT ceramics”, J. Appl. Phys. 107 (2010) 054109

(41) E. Erdem, K. Kiraz, M. Somer, R.-A. Eichel: „Sol-gel based synthesis of nano-sized Fe3+-doped PbTiO3 powders“, J. Eur. Ceram. Soc. 30 (2010) 289-293

(40) A. Baldansuren, H. Dilger, R.-A. Eichel, J.A. van Bokhoven, E. Roduner: „Interaction and reaction of ethylene and oxygen on six-atom silver clusters supported on LTA zeolite “, J. Phys. Chem. C 113 (2009) 19623-19632

(39) R.-A. Eichel, E. Erünal, M.D. Drahus, D.M. Smyth, J. van Tol, J. Acker, H. Kungl, M.J. Hoffmann: “Local variations in polarization and covalent bonding at the morphotropic phase boundary in Cu2+-doped PZT and KNN ferroelectric functional ceramics”, Phys. Chem. Chem. Phys. 11 (2009) 8698-8705

(38) R.-A. Eichel, M.D. Drahus, P. Jakes, E. Erünal, E. Erdem, S.K.S. Parashar, H. Kungl, M.J. Hoffmann: “Defect structure and formation of defect dipoles in Cu2+-modified metal oxides derived from a spin-Hamiltonian parameter analysis”, Mol. Phys. 107 (2009) 1981-1986

(37) A. Baldansuren, R.-A. Eichel, E. Roduner: “Nitrogen oxide reaction with six-atom silver clusters supported on LTA zeolite, Phys. Chem. Chem. Phys. 11 (2009) 6664-6675

(36) E. Erdem. V. Maas, A. Gembus, A. Schulz, V. Liebau-Kunzmann, C. Fasel, R. Riedel, R.-A. Eichel: “Defect structure in lithium-doped polymer-derived SiCN ceramics characterized by Raman and electron paramagnetic resonance spectroscopy” , Phys. Chem. Chem. Phys. 11 (2009) 5628-5633

(35) J. Kleebe, S. Lauterbach, L. Silvestroni, H. Kungl, M.J. Hoffmann, E. Erdem, R.-A. Eichel: „Formation of magnetic grains in ferroelectric Pb[Zr0.6Ti0.4]O3 ceramics doped with Fe3+ above the solubility limit“, Appl. Phys. Lett. 94 (2009) 142901

(34) J.J. Schneider, R.C. Hoffmann, J. Engstler, S. Dilfer, A. Klyszcz, E. Erdem, P. Jakes, R.-A. Eichel: „Zinc oxide derived from single source precursor chemistry under chimie douce conditions: Formation pathway, defect chemistry and possible applications in thin film printing “, J. Mater. Chem. 19 (2009) 1449-1457

(33) L.X. Zhang, E. Erdem, X. Ren, R.-A. Eichel: „Reorientation of (MnTi−VO) defect dipoles in acceptor-modified BaTiO3 single crystals: An electron paramagnetic resonance study“, Appl. Phys. Lett., 93 (2008) 202901

(32) I. Menapace, G. Mera, R. Riedel, E. Erdem, R.-A. Eichel, A. Pauletti, G.A. Appleby: „Luminescence of heat-treated silicon-based polymers: promising materials for LED applications“, J. Mater. Sci. 43 (2008) 5790–5796

(31) M.D. Drahus, E. Erdem, R.-A. Eichel, H. Kungl, M.J. Hoffmann, A. Ozarowski, H. van Tol, L.C. Brunel: „Defect structure in (Gd,Fe) co-doped ‘soft’ PZT 52.5/47.5 piezoelectric ceramics“, Funct. Mat. Lett. 1 (2008) 7-11

(30) E. Erdem, M. Drahus, R.-A. Eichel, A. Ozarowski, H. van Tol, L.C. Brunel: „Characterization of the functional center site in manganese-modified ferroelectric PbTiO3 “, Ferroelectrics 363 (2008) 39-49

(29) E. Erdem, R.-A. Eichel, H. Kungl, M.J. Hoffmann, A. Ozarowski, H. van Tol, L.C. Brunel: „Characterization of internal bias fields in (La,Fe)-codoped PZT 52.5/47.5 piezoelectrics“, IEEE Trans. Ultrason. Frequ. Control 55 (2008) 1061-1068

(28) R.-A. Eichel, P. Erhart, P Träskelin, K. Albe, H. Kungl, M.J. Hoffmann: „Formation of copper-oxygen vacancy dipole centers in lead titanate“, Phys. Rev. Lett. 100 (2008) 095504

(27) R.-A. Eichel: “Nanoscale characterization of defect chemistry in acceptor-modified piezoelectric ceramics”, J. Am. Ceram. Soc. 91 (2008) 691-701

(26) R.-A. Eichel, R. Böttcher: “Characterization of the high-spin Mn2+-functional centre in BaTiO3 by means of right-angle wiggling EPR spectroscopy”, Mol. Phys. 105 (2007) 2195–2201

(25) P. Erhart, R.-A. Eichel, P Träskelin, K. Albe: „Association of oxygen vacancies with impurity metal ions in lead titanate“, Phys. Rev. B 76 (2007) 174116

(24) E. Erdem, R.-A. Eichel, A. Ozarowski, H. van Tol, L.C. Brunel, H. Kungl, M.J. Hoffmann: „Effect of local symmetry-reduction in (La,Fe)-codoped PZT 40/60 piezoelectrics“, Phys. Scripta T129 (2007) 12-16

(23) K.A. Schönau, L.A. Schmitt, M. Knapp, H. Fuess, R.-A. Eichel, H. Kungl, M.J. Hoffmann: Nanodomain structure of morphotropic Pb[Zr1-xTix]O3 at its morphotropic phase boundary: Investigations from local to average structure, Phys. Rev. B 75 (2007) 184117

(22) R.-A. Eichel: “Defect chemistry and micro structure of oxide ferroelectrics – valence state, site of incorporation and mechanisms of charge compensation”, J. Electroceram. 19 (2007) 9-21

(21) E. Ramic, R.-A. Eichel, K.-P. Dinse, A. Titz, B. Schmidt: Complexation geometry of copper(II)-chelidamate - Multi-frequency pulsed electron paramagnetic resonance and electron nuclear double resonance, J. Phys. Chem. B 110 (2006) 20655-20663

(20) A. Gembus, B. Corzilius, R.-A. Eichel, K.-P. Dinse, S. Immel, D. Stumm, M. Flauaus, H. Plenio: Hemicarcerands and endohedral metal ion complexation - synthesis, EPR measurements and structures, J. Phys. Chem. B 110 (2006) 15012-15020

(19) H. Mestric, R.-A. Eichel, K.-P. Dinse, A. Ozarowski, J. van Tol, L.C. Brunel, H. Kungl, M.J. Hoffmann, K.A. Schönau, M. Knapp, H. Fuess: Iron-oxygen vacancy defect association in polycrystalline iron-doped PbZrO3 antiferroelectrics - multi-frequency electron paramagnetic resonance and Newman superposition model analysis , Phys. Rev. B 73 (2006) 184105

(18) R.-A. Eichel, H. Mestric, H. Kungl, M.J. Hoffmann: Multi-frequency electron paramagnetic resonance analysis of polycrystalline gadolinium-doped PbTiO3 - charge compensation and site of incorporation, Appl. Phys. Lett. 88 (2006) 122506

(17) X. Liu, H. Dilger, R.-A. Eichel, J. Kunstmann, E. Roduner: A small platinum cluster in NaY zeolite – characterization and hydrogen adsorption and desorption, J. Phys. Chem. B 110 (2006) 2013-2023

(16) R.-A. Eichel, A. Schweiger: Electron spin echo envelope modulation spectroscopy with g-value and orientation filters, Chem. Phys. Lett. 417 (2006) 222-229

(15) R.-A. Eichel, H. Mestric, K.-P. Dinse, A. Ozarowski, J. van Tol, L.C. Brunel, H. Kungl, M.J. Hoffmann: High-field, high-frequency EPR of paramagnetic functional centers in Cu 2+ - and Fe3+-modified polycrystalline Pb[Zr x Ti 1-x ]O 3 ferroelectrics, Magn. Reson. Chem. 43 (2005) S166-S173

(14) H. Mestric, R.-A. Eichel, T. Kloss, K.-P. Dinse, So. Laubach, St. Laubach, P.C. Schmidt, K.A. Schönau, M. Knapp, H. Ehrenberg: The nature of iron-oxygen vacancy defect centers in PbTiO3 , Phys. Rev. B 71 (2005) 134109

(13) R.-A. Eichel, K.-P. Dinse, H. Kungl, M.J. Hoffmann, A. Ozarowski, J. van Tol, L.C. Brunel: Exploring the morphotropic phase boundary in copper(II)-modi ed Pb[Zr 0.54 Ti 0.46]O 3 ferroelectrics, Appl. Phys. A 80 (2005) 51-54

(12) H. Mestric, R.-A. Eichel, K.-P. Dinse, A. Ozarowski, J. van Tol, L.C. Brunel: High-frequency EPR investigation of the Fe 3+ impurity center in polycrystalline PbTiO3 in its ferroelectric phase, J. Appl. Phys. 96 (2004) 7440-7444

(11) R.-A. Eichel, H. Kungl, M.J. Hoffmann: Determination of functional center local environment in copper-modified Pb[Zr 0.54 Ti 0.46]O 3 ceramics, J. Appl. Phys. 95 (2004) 8092-8096

(10) T. Schmauke, R.-A. Eichel, A. Schweiger, E. Roduner: Electron paramagnetic resonance studies of a platinum cluster in Linde L and faujasite zeolites, Phys. Chem. Chem. Phys. 5 (2003) 3076-3084

(9) R.-A. Eichel, J. Granwehr, A. Schweiger: Measurement of spin-lattice relaxation times in EPR with enhanced orientation selectivity, J. Magn. Reson. 162 (2003) 380-384

(8) S. Van Doorslaer, G. Jeschke, B. Epel, D. Goldfarb, R.-A. Eichel, B. Kräutler, A. Schweiger: Axial solvent coordination in “base-off” cob(II)alamin and related Co(II)-corrinates revealed by 2D-EPR, J. Am. Chem. Soc. 125 (2003) 5915-5927

(7) P. Jakes, N. Weiden, R.-A. Eichel, A. Gembus, K.-P. Dinse, C. Meyer, W. Harneit, A. Weidinger: EPR investigation of endohedral fullerenes N@C 60 and N@C 70 in a liquid crystal, J. Magn. Reson. 156 (2002) 303-308

(6) R.-A. Eichel, A. Schweiger: Coherence-Transfer Right-Angle Wiggling EPR, Mol. Phys. 100 (2002) 3661-3665

(5) R.-A. Eichel, A. Schweiger: Polarization-Transfer Electron-Zeeman resolved EPR, Chem. Phys. Lett. 358 (2002) 271-277

(4) C. Calle, R.-A. Eichel, C. Finazzo, J. Forrer, J. Granwehr, I. Gromov, W. Groth, J. Harmer, M. Kälin, W. Lämmler, L. Liesum, Z. Madi, S. Stoll. A. Schweiger: Electron Paramagnetic Resonance Spectroscopy, Chimia 55 (2001) 763-766

(3) R.-A. Eichel, A. Schweiger: Right-Angle Wiggling EPR Spectroscopy, J. Chem. Phys. 115 (2001) 9126-9135

(2) R.-A. Eichel, A. Schweiger: Electron-Zeeman resolved EPR Spectroscopy, J. Magn. Reson. 152 (2001) 276-287

(1) R.-A. Eichel, I. Egry: Surface tension and surface segregation of liquid cobalt-iron and cobalt-copper alloys, Z. Metallkd. 90 (1999) 371-375