Room temperature ferromagnetism in spin-coated anatase- and rutile-Ti0.95Fe0.05O2 films
作者： P. Talagala , Vaman M. Naik , R. Naik , P. Kharel , R. Suryanarayanan
DOI: 10.1088/0953-8984/17/4/017
关键词:
摘要: Thin films of Ti1?xFexO2?(x = 0 and 0.05) have been prepared on sapphire substrates by the spin-on technique starting from metal?organic precursors. When heat treated in air at 550 700??C respectively, these present pure anatase rutile structures as shown both x-ray diffraction Raman spectroscopy. Optical absorption indicates a high degree transparency visible region. Such show very small magnetic moment 300?K. However, when are annealed vacuum 1 ? 10?5?Torr 500 600??C moment, 300?K, is strongly enhanced, reaching 0.46??B/Fe for sample 0.48??B/Fe one. The ferromagnetic Curie temperature samples above 350?K. reheated air, reduces strongly. data seem to indicate that oxygen defects created result annealing may be responsible observed ferromagnetism our samples.
core.ac.uk
harvard.edu
unirioja.es
sci-hub.st 参考文章(26)
S. P. S. Porto, P. A. Fleury, T. C. Damen, Raman Spectra of Ti O 2 , Mg F 2 , Zn F 2 , Fe F 2 , and Mn F 2 Physical Review. ,vol. 154, pp. 522- 526 ,(1967) , 10.1103/PHYSREV.154.522
S. B. Ogale, R. J. Choudhary, J. P. Buban, S. E. Lofland, S. R. Shinde, S. N. Kale, V. N. Kulkarni, J. Higgins, C. Lanci, J. R. Simpson, N. D. Browning, S. Das Sarma, H. D. Drew, R. L. Greene, T. Venkatesan, High temperature ferromagnetism with a giant magnetic moment in transparent co-doped SnO(2-delta). Physical Review Letters. ,vol. 91, pp. 077205- ,(2003) , 10.1103/PHYSREVLETT.91.077205
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
Nguyen Hoa Hong, Joe Sakai, W. Prellier, Distribution of dopant in Fe:TiO2 and Ni:TiO2 thin films Journal of Magnetism and Magnetic Materials. ,vol. 281, pp. 347- 352 ,(2004) , 10.1016/J.JMMM.2004.04.125
L. Bergqvist, O. Eriksson, J. Kudrnovský, V. Drchal, P. Korzhavyi, I. Turek, Magnetic Percolation in Diluted Magnetic Semiconductors Physical Review Letters. ,vol. 93, pp. 137202- 137202 ,(2004) , 10.1103/PHYSREVLETT.93.137202
Yuji Matsumoto, Makoto Murakami, Tomoji Shono, Tetsuya Hasegawa, Tomoteru Fukumura, Masashi Kawasaki, Parhat Ahmet, Toyohiro Chikyow, Shin-ya Koshihara, Hideomi Koinuma, Room-Temperature Ferromagnetism in Transparent Transition Metal-Doped Titanium Dioxide Science. ,vol. 291, pp. 854- 856 ,(2001) , 10.1126/SCIENCE.1056186
Wan Kyu Park, Ricardo J. Ortega-Hertogs, Jagadeesh S. Moodera, Alex Punnoose, M. S. Seehra, Semiconducting and ferromagnetic behavior of sputtered Co-doped TiO2 thin films above room temperature Journal of Applied Physics. ,vol. 91, pp. 8093- 8095 ,(2002) , 10.1063/1.1452650
Nguyen Hoa Hong, W Prellier, Joe Sakai, Antoine Ruyter, Correlation between crystallinity and magnetism in a series of laser-ablated anatase Ti1−xCoxO2 thin films Journal of Physics: Condensed Matter. ,vol. 16, pp. 5549- 5554 ,(2004) , 10.1088/0953-8984/16/30/015
S. A. Chambers, S. Thevuthasan, R. F. C. Farrow, R. F. Marks, J. U. Thiele, L. Folks, M. G. Samant, A. J. Kellock, N. Ruzycki, D. L. Ederer, U. Diebold, Epitaxial growth and properties of ferromagnetic co-doped TiO2 anatase Applied Physics Letters. ,vol. 79, pp. 3467- 3469 ,(2001) , 10.1063/1.1420434
Nguyen Hoa Hong, Joe Sakai, W. Prellier, Awatef Hassini, Antoine Ruyter, François Gervais, Ferromagnetism in transition-metal-doped Ti O 2 thin films Physical Review B. ,vol. 70, pp. 195204- ,(2004) , 10.1103/PHYSREVB.70.195204