Identifying local dopant structures and their impact on the magnetic properties of spintronic materials

被引：14

作者：

Green, R. J. ^{[1
]}

Chang, G. S. ^{[1
]}

Zhang, X. Y. ^{[2
,3
]}

Dinia, A. ^{[4
]}

Kurmaev, E. Z. ^{[5
]}

Moewes, A. ^{[1
]}

机构：

[1] Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada

[2] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[3] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

[4] ECPM, UDS, CNRS, IPCMS,UDS,UMR 7504, F-67034 Strasbourg 2, France

[5] Russian Acad Sci, Ural Div, Inst Met Phys, Ekaterinburg 620990, Russia

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 11期

基金：

加拿大自然科学与工程研究理事会; 中国国家自然科学基金; 俄罗斯科学基金会;

关键词：

X-RAY-ABSORPTION; MN-DOPED ZNO; TRANSITION-METAL COMPOUNDS; ROOM-TEMPERATURE; THIN-FILMS; FERROMAGNETISM; SPECTROSCOPY; EMISSION; SPECTRA; FIELD;

D O I：

10.1103/PhysRevB.83.115207

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The local structures of transition-metal dopant atoms in semiconductor host lattices of dilute magnetic semiconductors are determined using resonant inelastic x-ray scattering. Ligand field multiplet calculations are employed to analyze experimental data and show when dopant atoms substitute into the lattice and when they form metallic or oxide clusters. For ZnO doped with Mn, low-temperature ferromagnetism is shown to be intrinsic, but can be quenched by the formation of MnO clusters. For CeO(2) doped with Co, room-temperature ferromagnetism is due to clusters of Co, while substitution into the lattice leads to paramagnetic behavior.

引用

页数：6

共 32 条

[1]

Ballhausen C.J., 1962, Introduction to Ligand Field Theory

[2] Appearance of Ferromagnetism in Co-Doped CeO2 Diluted Magnetic Semiconductors Prepared by Solid-State Reaction [J].

Bouaine, A. ;

Green, R. J. ;

Colis, S. ;

Bazylewski, P. ;

Chang, G. S. ;

Moewes, A. ;

Kurmaev, E. Z. ;

Dinia, A. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (05) :1556-1560

[3] Effect of Co and O defects on the magnetism in Co-doped ZnO: Experiment and theory [J].

Chang, G. S. ;

Kurmaev, E. Z. ;

Boukhvalov, D. W. ;

Finkelstein, L. D. ;

Colis, S. ;

Pedersen, T. M. ;

Moewes, A. ;

Dinia, A. .

PHYSICAL REVIEW B, 2007, 75 (19)

[4] Combining M- and L-edge resonant inelastic x-ray scattering for studies of 3d transition metal compounds [J].

Chiuzbaian, S. G. ;

Schmitt, T. ;

Matsubara, M. ;

Kotani, A. ;

Ghiringhelli, G. ;

Dallera, C. ;

Tagliaferri, A. ;

Braicovich, L. ;

Scagnoli, V. ;

Brookes, N. B. ;

Staub, U. ;

Patthey, L. .

PHYSICAL REVIEW B, 2008, 78 (24)

[5] Localized electronic excitations in NiO studied with resonant inelastic X-ray scattering at the Ni M threshold:: Evidence of spin flip -: art. no. 197402 [J].

Chiuzbaian, SG ;

Ghiringhelli, G ;

Dallera, C ;

Grioni, M ;

Amann, P ;

Wang, X ;

Braicovich, L ;

Patthey, L .

PHYSICAL REVIEW LETTERS, 2005, 95 (19)

[6] LIGAND-FIELD STRENGTHS AND OXIDATION-STATES FROM MANGANESE L-EDGE SPECTROSCOPY [J].

CRAMER, SP ;

DEGROOT, FMF ;

MA, Y ;

CHEN, CT ;

SETTE, F ;

KIPKE, CA ;

EICHHORN, DM ;

CHAN, MK ;

ARMSTRONG, WH ;

LIBBY, E ;

CHRISTOU, G ;

BROOKER, S ;

MCKEE, V ;

MULLINS, OC ;

FUGGLE, JC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (21) :7937-7940

[7]

de Groot F, 2008, ADV CONDENS MAT SCI, V6, P1

[8] OXYGEN-1S AND COBALT-2P X-RAY ABSORPTION OF COBALT OXIDES [J].

DEGROOT, FMF ;

ABBATE, M ;

VANELP, J ;

SAWATZKY, GA ;

MA, YJ ;

CHEN, CT ;

SETTE, F .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (14) :2277-2288

[9] 2P X-RAY ABSORPTION OF 3D TRANSITION-METAL COMPOUNDS - AN ATOMIC MULTIPLET DESCRIPTION INCLUDING THE CRYSTAL-FIELD [J].

DEGROOT, FMF ;

FUGGLE, JC ;

THOLE, BT ;

SAWATZKY, GA .

PHYSICAL REVIEW B, 1990, 42 (09) :5459-5468

[10] Zener model description of ferromagnetism in zinc-blende magnetic semiconductors [J].

Dietl, T ;

Ohno, H ;

Matsukura, F ;

Cibert, J ;

Ferrand, D .

SCIENCE, 2000, 287 (5455) :1019-1022

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