Anisotropy of the magnetization of a dilute magnetic oxide

被引：37

作者：

Coey, JMD ^{[1
]}

Venkatesan, M ^{[1
]}

Fitzgerald, CB ^{[1
]}

Dorneles, LS ^{[1
]}

Stamenov, P ^{[1
]}

Lunney, JG ^{[1
]}

机构：

[1] Trinity Coll Dublin, Dept Phys, Dublin 2, Ireland

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 290卷

基金：

爱尔兰科学基金会;

关键词：

magnetic semiconductors; unconventional ferromagnetism; magnetic anisotropy; defects; thin films;

D O I：

10.1016/j.jmmm.2004.11.450

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-quality (1 1 0) films of ZnO, undoped or doped with the 3d transition metals from Sc to Cu, have been prepared on R-cut sapphire. Most of the films, including the one doped with Sc, exhibit ferromagnetic moments at room temperature greater than 100 μ(B) nm(-2), which are remarkably anisotropic. The moment in 1 T is usually larger, by a factor of up to three, when the field is applied perpendicular to the plane of the film than it is in a parallel direction. Strong in-plane anisotropy is observed for Co. The data suggest a new type of ferromagnetism related to defects at the film-substrate interface. © 2004 Elsevier B.V. All rights reserved.

引用

收藏

页码：1405 / 1407

页数：3

相关论文

共 16 条

[1] Ferromagnetism in Fe-doped SnO2 thin films [J].

Coey, JMD ;

Douvalis, AP ;

Fitzgerald, CB ;

Venkatesan, M .

APPLIED PHYSICS LETTERS, 2004, 84 (08) :1332-1334

[2]

COEY JMD, UNPUB

[3]

FITZGERALD CB, UNPUB

[4] Electron paramagnetic resonance study of Zn1-xCoxO:: A predicted high-temperature ferromagnetic semiconductor -: art. no. 041308 [J].

Jedrecy, N ;

von Bardeleben, HJ ;

Zheng, Y ;

Cantin, JL .

PHYSICAL REVIEW B, 2004, 69 (04)

[5] Ferromagnetism induced by clustered Co in Co-doped anatase TiO2 thin films -: art. no. 017401 [J].

Kim, JY ;

Park, JH ;

Park, BG ;

Noh, HJ ;

Oh, SJ ;

Yang, JS ;

Kim, DH ;

Bu, SD ;

Noh, TW ;

Lin, HJ ;

Hsieh, HH ;

Chen, CT .

PHYSICAL REVIEW LETTERS, 2003, 90 (01)

[6] Room-temperature ferromagnetism in transparent transition metal-doped titanium dioxide [J].

Matsumoto, Y ;

Murakami, M ;

Shono, T ;

Hasegawa, T ;

Fukumura, T ;

Kawasaki, M ;

Ahmet, P ;

Chikyow, T ;

Koshihara, S ;

Koinuma, H .

SCIENCE, 2001, 291 (5505) :854-856

[7] High temperature ferromagnetism with a giant magnetic moment in transparent Co-doped SnO2-δ -: art. no. 077205 [J].

Ogale, SB ;

Choudhary, RJ ;

Buban, JP ;

Lofland, SE ;

Shinde, SR ;

Kale, SN ;

Kulkarni, VN ;

Higgins, J ;

Lanci, C ;

Simpson, JR ;

Browning, ND ;

Das Sarma, S ;

Drew, HD ;

Greene, RL ;

Venkatesan, T .

PHYSICAL REVIEW LETTERS, 2003, 91 (07)

[8] Wide band gap ferromagnetic semiconductors and oxides [J].

Pearton, SJ ;

Abernathy, CR ;

Overberg, ME ;

Thaler, GT ;

Norton, DP ;

Theodoropoulou, N ;

Hebard, AF ;

Park, YD ;

Ren, F ;

Kim, J ;

Boatner, LA .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (01) :1-13

[9] Oxide-diluted magnetic semiconductors: a review of the experimental status [J].

Prellier, W ;

Fouchet, A ;

Mercey, B .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (37) :R1583-R1601

[10] On the room temperature ferromagnetism in Co-doped TiO2 films [J].

Punnoose, A ;

Seehra, MS ;

Park, WK ;

Moodera, JS .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) :7867-7869