Unconventional carrier-mediated ferromagnetism above room temperature in ion-implanted (Ga, Mn)P:C.
作者： N. Theodoropoulou , A. F. Hebard , M. E. Overberg , C. R. Abernathy , S. J. Pearton
DOI: 10.1103/PHYSREVLETT.89.107203
关键词:
摘要: Ion implantation of Mn ions into hole-doped GaP has been used to induce ferromagnetic behavior above room temperature for optimized concentrations near 3 at. %. The magnetism is suppressed when the dose increasedor decreased away from % value, or n-type substrates are used. At low temperatures saturated moment on order 1 Bohr magneton, and spin wave stiffness inferred Bloch-law T / 2 dependence magnetization provides an estimate c = 385 K Curie that exceeds experimental 270 K. presence clusters hysteresis at least 330 attributed disorder proximity a metal-insulating transition.
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sci-hub.se 参考文章(26)
C. D. Graham, B. D. Cullity, Introduction to Magnetic Materials ,(1972)
H. Ohno, F. Matsukura, A ferromagnetic III–V semiconductor: (Ga,Mn)As Solid State Communications. ,vol. 117, pp. 179- 186 ,(2001) , 10.1016/S0038-1098(00)00436-1
H. Ohno, D. Chiba, F. Matsukura, T. Omiya, E. Abe, T. Dietl, Y. Ohno, K. Ohtani, Electric-field control of ferromagnetism Nature. ,vol. 408, pp. 944- 946 ,(2000) , 10.1038/35050040
R. Fiederling, M. Keim, G. Reuscher, W. Ossau, G. Schmidt, A. Waag, L. W. Molenkamp, Injection and detection of a spin-polarized current in a light-emitting diode Nature. ,vol. 402, pp. 787- 790 ,(1999) , 10.1038/45502
Y. Ohno, D. K. Young, B. Beschoten, F. Matsukura, H. Ohno, D. D. Awschalom, Electrical spin injection in a ferromagnetic semiconductor heterostructure Nature. ,vol. 402, pp. 790- 792 ,(1999) , 10.1038/45509
H. Ohno, Making Nonmagnetic Semiconductors Ferromagnetic Science. ,vol. 281, pp. 951- 956 ,(1998) , 10.1126/SCIENCE.281.5379.951
SA Wolf, DD Awschalom, RA Buhrman, JM Daughton, von S von Molnár, ML Roukes, A Yu Chtchelkanova, DM Treger, Spintronics: A Spin-Based Electronics Vision for the Future Science. ,vol. 294, pp. 1488- 1495 ,(2001) , 10.1126/SCIENCE.1065389
Gennadiy A. Medvedkin, Takayuki Ishibashi, Takao Nishi, Koji Hayata, Yoichi Hasegawa, Katsuaki Sato, Room Temperature Ferromagnetism in Novel Diluted Magnetic Semiconductor Cd1¡xMnxGeP2 Japanese Journal of Applied Physics. ,vol. 39, pp. 949- ,(2000) , 10.1143/JJAP.39.L949
M. L. Reed, N. A. El-Masry, H. H. Stadelmaier, M. K. Ritums, M. J. Reed, C. A. Parker, J. C. Roberts, S. M. Bedair, Room temperature ferromagnetic properties of (Ga, Mn)N Applied Physics Letters. ,vol. 79, pp. 3473- 3475 ,(2001) , 10.1063/1.1419231
Kenji Ueda, Hitoshi Tabata, Tomoji Kawai, Magnetic and electric properties of transition-metal-doped ZnO films Applied Physics Letters. ,vol. 79, pp. 988- 990 ,(2001) , 10.1063/1.1384478