Enhancement of ferromagnetic properties in Zn1-xCoxO by additional Cu doping

被引：132

作者：

Lin, HT ^{[1
]}

Chin, TS

Shih, JC

Lin, SH

Hong, TM

Huang, RT

Chen, FR

Kai, JJ

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

[2] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

[3] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 300, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 04期

关键词：

D O I：

10.1063/1.1775877

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The high-temperature ferromagnetism in Co-doped ZnO samples fabricated by the standard solid-state reaction method is reported. Additional Cu doping into bulk Zn0.98Co0.02O is essential to achieve room-temperature ferromagnetism. Structure and composition analyses revealed that cobalt is incorporated into the lattice structure, forming a solid solution instead of precipitates. In the case of Zn0.97Cu0.01Co0.02O, the coercive field measured by a vibrating sample magnetometer at room temperature is 60 Oe. The implication of the effect of Cu doping in bulk Zn0.98Co0.02O is also discussed. (C) 2004 American Institute of Physics.

引用

页码：621 / 623

页数：3

共 11 条

[1] Dielt T., 2000, SCIENCE, V287, P1019
[2] High throughput fabrication of transition-metal-doped epitaxial ZnO thin films: A series of oxide-diluted magnetic semiconductors and their properties
Jin, ZW
Fukumura, T
Kawasaki, M
Ando, K
Saito, H
Sekiguchi, T
Yoo, YZ
Murakami, M
Matsumoto, Y
Hasegawa, T
Koinuma, H
[J]. APPLIED PHYSICS LETTERS, 2001, 78 (24) : 3824 - 3826
[3] Study of diluted magnetic semiconductor: Co-doped ZnO
Lee, HJ
Jeong, SY
Cho, CR
Park, CH
[J]. APPLIED PHYSICS LETTERS, 2002, 81 (21) : 4020 - 4022
[4] Leiter FH, 2001, PHYS STATUS SOLIDI B, V226, pR4, DOI 10.1002/1521-3951(200107)226:1<R4::AID-PSSB99994>3.0.CO
[5] 2-F
[6] DILUTED MAGNETIC III-V SEMICONDUCTORS
MUNEKATA, H
OHNO, H
VONMOLNAR, S
SEGMULLER, A
CHANG, LL
ESAKI, L
[J]. PHYSICAL REVIEW LETTERS, 1989, 63 (17) : 1849 - 1852
[7] Semiconductors - Toward functional spintronics
Ohno, H
[J]. SCIENCE, 2001, 291 (5505) : 840 - 841
[8] Magnetic semiconductors based on cobalt substituted ZnO
Rode, K
Anane, A
Mattana, R
Contour, JP
Durand, O
LeBourgeois, R
[J]. JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) : 7676 - 7678
[9] Stabilization of ferromagnetic states by electron doping in Fe-, Co- or Ni-doped ZnO
Sato, K
Katayama-Yoshida, H
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2001, 40 (4A): : L334 - L336
[10] CARRIER-CONCENTRATION INDUCED FERROMAGNETISM IN PBSNMNTE
STORY, T
GALAZKA, RR
FRANKEL, RB
WOLFF, PA
[J]. PHYSICAL REVIEW LETTERS, 1986, 56 (07) : 777 - 779

← 1 2 →