Unexpected magnetic behavior of Cu-doped CeO2

被引:45
作者
Slusser, Paul [1 ]
Kumar, Dhananjay [2 ]
Tiwari, Ashutosh [1 ]
机构
[1] Univ Utah, Dept Mat Sci & Engn, Nanostruct Mat Res Lab, Salt Lake City, UT 84112 USA
[2] N Carolina A&T, Dept Mech Engn, Greensboro, NC 27411 USA
基金
美国国家科学基金会;
关键词
cerium compounds; copper; epitaxial layers; ferromagnetic materials; magnetic thin films; pulsed laser deposition; ultraviolet spectra; visible spectra; X-ray diffraction; X-ray photoelectron spectra; INJECTION; ELECTRON;
D O I
10.1063/1.3383238
中图分类号
O59 [应用物理学];
学科分类号
摘要
In this paper, we are reporting the magnetic behavior of Cu-doped CeO2 films grown on single crystal LaAlO3(001) substrates. The Ce1-xCuxO2 films with x=0.03 and 0.15 were deposited by a pulsed laser deposition technique and were thoroughly characterized using high resolution x-ray diffraction, x-ray photospectroscopy, ultraviolet-visible absorption spectroscopy, and magnetic property measurements. All the characterization experiments showed the films to be of high quality, epitaxial, and free of any secondary phases. Detailed structure-property correlation analysis revealed the observed ferromagnetic property to be the intrinsic property of the material.
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页数:3
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共 15 条
[11]   Fundamental obstacle for electrical spin injection from a ferromagnetic metal into a diffusive semiconductor [J].
Schmidt, G ;
Ferrand, D ;
Molenkamp, LW ;
Filip, AT ;
van Wees, BJ .
PHYSICAL REVIEW B, 2000, 62 (08) :R4790-R4793
[12]   Ferromagnetic Properties of Bulk Fe-doped CeO2 Dilute Magnetic Semiconductors [J].
Sharma, S. K. ;
Knobel, M. ;
Meneses, C. T. ;
Kumar, Shalendra ;
Kim, Y. J. ;
Koo, B. H. ;
Lee, C. G. ;
Shukla, D. K. ;
Kumar, Ravi .
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2009, 55 (03) :1018-1021
[13]   High-temperature magnetic-field-induced activation of room-temperature ferromagnetism in Ce1-xNixO2 [J].
Thurber, A. ;
Reddy, K. M. ;
Punnoose, A. .
JOURNAL OF APPLIED PHYSICS, 2007, 101 (09)
[14]   Ferromagnetism in Co doped CeO2:: Observation of a giant magnetic moment with a high Curie temperature [J].
Tiwari, A ;
Bhosle, VM ;
Ramachandran, S ;
Sudhakar, N ;
Narayan, J ;
Budak, S ;
Gupta, A .
APPLIED PHYSICS LETTERS, 2006, 88 (14)
[15]   Ferromagnetism in Cu-doped ZnO films: Role of charge carriers [J].
Tiwari, Ashutosh ;
Snure, Michael ;
Kumar, Dhananjay ;
Abiade, Jeremiah T. .
APPLIED PHYSICS LETTERS, 2008, 92 (06)