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Katharina Ollefs
Katharina Ollefs
Verified email at uni-due.de
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Cited by
Year
Absence of Intrinsic Ferromagnetic Interactions of Isolated and Paired Co Dopant Atoms <?format ?>in with High Structural Perfection
A Ney, K Ollefs, S Ye, T Kammermeier, V Ney, TC Kaspar, SA Chambers, ...
Physical Review Letters 100 (15), 157201, 2008
2652008
Spin pumping damping and magnetic proximity effect in Pd and Pt spin-sink layers
M Caminale, A Ghosh, S Auffret, U Ebels, K Ollefs, F Wilhelm, A Rogalev, ...
Physical Review B 94 (1), 014414, 2016
1482016
Advanced spectroscopic synchrotron techniques to unravel the intrinsic properties of dilute magnetic oxides: the case of Co: ZnO
A Ney, M Opel, TC Kaspar, V Ney, S Ye, K Ollefs, T Kammermeier, ...
New journal of physics 12 (1), 013020, 2010
1182010
High-resolution X-ray lensless imaging by differential holographic encoding
D Zhu, M Guizar-Sicairos, B Wu, A Scherz, Y Acremann, T Tyliszczak, ...
Physical review letters 105 (4), 043901, 2010
1072010
Spin Hall magnetoresistance in a canted ferrimagnet
K Ganzhorn, J Barker, R Schlitz, BA Piot, K Ollefs, F Guillou, F Wilhelm, ...
Physical Review B 94 (9), 094401, 2016
1062016
Hysteresis design of magnetocaloric materials—from basic mechanisms to applications
F Scheibel, T Gottschall, A Taubel, M Fries, KP Skokov, A Terwey, ...
Energy Technology 6 (8), 1397-1428, 2018
1012018
Limitations of measuring small magnetic signals of samples deposited on a diamagnetic substrate
A Ney, T Kammermeier, V Ney, K Ollefs, S Ye
Journal of Magnetism and Magnetic Materials 320 (23), 3341-3346, 2008
942008
Element-specific magnetic hysteresis of individual 18 nm Fe nanocubes
F Kronast, N Friedenberger, K Ollefs, S Gliga, L Tati-Bismaths, R Thies, ...
Nano Letters 11 (4), 1710-1715, 2011
812011
Magnetic properties of rare-earth and transition metal based perovskite type high entropy oxides
R Witte, A Sarkar, L Velasco, R Kruk, RA Brand, B Eggert, K Ollefs, ...
Journal of Applied Physics 127 (18), 2020
652020
Anisotropic paramagnetism of Co-doped ZnO epitaxial films
A Ney, T Kammermeier, K Ollefs, S Ye, V Ney, TC Kaspar, SA Chambers, ...
Physical Review B—Condensed Matter and Materials Physics 81 (5), 054420, 2010
622010
Role of intermediate 4f states in tuning the band structure of high entropy oxides
A Sarkar, B Eggert, L Velasco, X Mu, J Lill, K Ollefs, SS Bhattacharya, ...
APL materials 8 (5), 2020
602020
Microwave soft x-ray microscopy for nanoscale magnetization dynamics in the 5–10 GHz frequency range
S Bonetti, R Kukreja, Z Chen, D Spoddig, K Ollefs, C Schöppner, ...
Review of Scientific Instruments 86 (9), 2015
552015
Iridates from the molecular side
KS Pedersen, J Bendix, A Tressaud, E Durand, H Weihe, Z Salman, ...
Nature communications 7 (1), 12195, 2016
522016
Structural, chemical and magnetic properties of secondary phases in Co-doped ZnO
A Ney, A Kovács, V Ney, S Ye, K Ollefs, T Kammermeier, F Wilhelm, ...
New Journal of Physics 13 (10), 103001, 2011
502011
Magnetism of Co doped ZnO with Al codoping: Carrier-induced mechanisms versus extrinsic origins
A Ney, V Ney, S Ye, K Ollefs, T Kammermeier, TC Kaspar, SA Chambers, ...
Physical Review B—Condensed Matter and Materials Physics 82 (4), 041202, 2010
492010
Absence of magnetic proximity effects in magnetoresistive hybrid interfaces
M Valvidares, N Dix, M Isasa, K Ollefs, F Wilhelm, A Rogalev, F Sánchez, ...
Physical Review B 93 (21), 214415, 2016
472016
Comprehensive investigation of crystallographic, spin-electronic and magnetic structure of (Co0. 2Cr0. 2Fe0. 2Mn0. 2Ni0. 2) 3O4: Unraveling the suppression of configuration …
A Sarkar, B Eggert, R Witte, J Lill, L Velasco, Q Wang, J Sonar, K Ollefs, ...
Acta Materialia 226, 117581, 2022
462022
Structural and magnetic analysis of epitaxial films of Gd-doped ZnO
V Ney, S Ye, T Kammermeier, K Ollefs, F Wilhelm, A Rogalev, S Lebegue, ...
Physical Review B—Condensed Matter and Materials Physics 85 (23), 235203, 2012
422012
Element specific magnetic properties of Gd-doped GaN: Very small polarization of Ga and paramagnetism of Gd
A Ney, T Kammermeier, V Ney, S Ye, K Ollefs, E Manuel, S Dhar, ...
Physical Review B—Condensed Matter and Materials Physics 77 (23), 233308, 2008
402008
Investigating magnetic proximity effects at ferrite/Pt interfaces
M Collet, R Mattana, JB Moussy, K Ollefs, S Collin, C Deranlot, A Anane, ...
Applied Physics Letters 111 (20), 2017
392017
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