Results 11 to 20 of about 48,917 (32)

Magnetic properties of Hydrogenated Li and Co doped ZnO nanoparticles

, 2006
The effect of hydrogenation on magnetic properties of Zn0.85Co0.05Li0.10O nanoparticles is presented. It was found that the sample hydrided at room temperature (RT) showed weak ferromagnetism (FM) while that hydrided at 400oC showed robust ferromagnetism
C. Sudakar, I. K. Gopalakrishnan, K. Shashikala, Manivannan A., O. D. Jayakumar, S. K. Kulshreshtha   +5 more
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Magnetic coupling properties of rare-earth metals (Gd, Nd) doped ZnO: first-principles calculations

, 2009
The electronic structure and magnetic coupling properties of rare-earth metals (Gd, Nd) doped ZnO have been investigated using first-principles methods.
Li SS, Shi HL, Shi HL Chinese Acad Sci Inst Semicond State Key Lab Superlattices & Microstruct Beijing 100083 Peoples R China. E-mail Address: hlshi@semi.ac.cn, Xia JB, Zhang P   +4 more
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Metallic ferromagnetism: Progress in our understanding of an old strong-coupling problem

, 1998
Metallic ferromagnetism is in general an intermediate to strong coupling phenomenon. Since there do not exist systematic analytic methods to investigate such types of problems, the microscopic origin of metallic ferromagnetism is still not sufficiently ...
A. Mielke, A. Mielke, A. Mielke, D. C. Mattis, D. Vollhardt, D. Vollhardt, E. H. Lieb, E. H. Lieb, E. H. Lieb, E. Müller-Hartmann, F. Bloch, G. S. Uhrig, H. Tasaki, H. Tasaki, H. Tasaki, H. Tasaki, J. C. Slater, J. E. Hirsch, J. H. Vleck van, J. Hubbard, J. Kanamori, J. Kuei, J. T. Gammel, K. Penc, L. M. Roth, M. C. Gutzwiller, M. Ulmke, P. Pieri, R. Hlubina, R. Shankar, R. Strack, S. Daul, T. Hanisch, T. Herrmann, T. Obermeier, T. Pruschke, W. Heisenberg, W. Hofstetter, W. Metzner, Y. Nagaoka   +39 more
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Doping change and distortion effect on double-exchange ferromagnetism

, 2005
Doping change and distortion effect on the double-exchange ferromagnetism are studied within a simplified double-exchange model. The presence of distortion is modelled by introducing the Falicov-Kimball interaction between itinerant electrons and ...
Minh-Tien Tran, U. Brandt, V. Zlatic, V. Zlatic, Van-Nham Phan   +4 more
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A route to room temperature ferromagnetic ultrathin SrRuO$_3$ films

, 2015
Experimental efforts to stabilize ferromagnetism in ultrathin films of transition metal oxides have so far failed, despite expectations based on density functional theory (DFT) and DFT+U. Here, we investigate one of the most promising materials, SrRuO$_3$
Held, Karsten, Si, Liang, Tomczak, Jan M., Zhong, Zhicheng   +3 more
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High Temperature Ferromagnetism with Giant Magnetic Moment in Transparent Co-doped SnO2-d [PDF]

, 2003
Occurrence of room temperature ferromagnetism is demonstrated in pulsed laser deposited thin films of Sn1-xCoxO2-d ...
C. Lanci, H. D. Drew, J. Higgins, J. P. Buban, J. R. Simpson, J. Y. Kim, N. D. Browning, R. J. Choudhary, R. L. Greene, S. B. Ogale, S. Das Sarma, S. Das Sarma, S. E. Lofland, S. N. Kale, S. R. Shinde, T. Venkatesan, V. N. Kulkarni   +16 more
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Ferromagnetism and Superconductivity in the multi-orbital Hubbard Model: Hund's Rule Coupling versus Crystal-Field Splitting

, 2003
The multi-orbital Hubbard model in one dimension is studied using the numerical diagonalization method. Due to the effect of the crystal-field splitting $\Delta$, the fully polarized ferromagnetism which is observed in the strong coupling regime becomes ...
Asai K., Gill W., Gunnarsson O., Haldane F. D. M., Heikes R. R., Held K., Imada M., Itoh M., Itoh M., Jonker G. H., Koshibae W., Kuei J., Louca D., Maeno Y., Masuda H., Momoi T., Motohashi T., Nomura T., Ogata M., Raccah P. M., Sakamoto H., Sano K., Sano K., Sano K., Sano K., Sano K., Schulz H. J., Shen S. Q., Takada K., Takimoto T., Terasaki I., Tokura Y., Voit J., Yamaji K.   +33 more
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Oxygen adsorption effect on magnetic properties of graphite [PDF]

, 2011
Both experimental and theoretical studies of the magnetic properties of micrographite and nanographite indicate a crucial role of the partial oxidation of graphitic zigzag edges in ferromagnetism.
Boukhvalov, D. W., da Silva, R. R., Kopelevich, Y., Moehlecke, S.   +3 more
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Cationic vacancy induced room-temperature ferromagnetism in transparent conducting anatase Ti_{1-x}Ta_xO_2 (x~0.05) thin films

, 2012
We report room-temperature ferromagnetism in highly conducting transparent anatase Ti1-xTaxO2 (x~0.05) thin films grown by pulsed laser deposition on LaAlO3 substrates. Rutherford backscattering spectrometry (RBS), x-ray diffraction (XRD), proton induced
Ariando, Barman, A. Roy, Breese, M. B. H., Dai, Y., Dhar, S., Ding, J., Feng, Y. P., Hilgenkamp, H., Motapothula, M., Neuber, G., Qi, D. -C., Ruebhausen, M., Rusydi, A., Santoso, I., Venkatesan, T., Wee, A. T. S., Yakovlev, N. L., Yang, K., Yi, J. B.   +18 more
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Non-perturbative approaches to magnetism in strongly correlated electron systems

, 1996
The microscopic basis for the stability of itinerant ferromagnetism in correlated electron systems is examined. To this end several routes to ferromagnetism are explored, using both rigorous methods valid in arbitrary spatial dimensions, as well as ...
Blümer, N., Held, K., Kollar, M., Schlipf, J., Ulmke, M., Vollhardt, D.   +5 more
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