High-temperature ferromagnetism in pulsed-laser deposited epitaxial (Zn,Mn)O thin films: Effects of substrate temperature

被引：57

作者：

Pradhan, AK

Zhang, K

Mohanty, S

Dadson, JB

Hunter, D

Zhang, J

Sellmyer, DJ

Roy, UN

Cui, Y

Mathews, S

Joseph, B

Sekhar, BR

Roul, BK

机构：

[1] Norfolk State Univ, Ctr Mat Res, Norfolk, VA 23504 USA

[2] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA

[3] Univ Nebraska, Ctr Mat Res & Anal, Lincoln, NE 68588 USA

[4] Fisk Univ, Dept Phys, Nashville, TN 37208 USA

[5] Inst Phys, Bhubaneswar 751005, Orissa, India

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 15期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

D O I：

10.1063/1.1897827

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on the observation of remarkable room-temperature ferromagnetism in epitaxial (Zn,Mn)O films grown by a pulsed-laser deposition technique using high-density targets. The optimum growth conditions were demonstrated from x-ray measurements, microstructure, Rutherford backscattering, micro-Raman, and magnetic studies. Superior ferromagnetic properties were observed in (Zn,Mn)O films grown at a substrate temperature of 500° C and with an oxygen partial pressure of 1 mTorr. Ferromagnetism becomes weaker with increasing substrate temperature due to the formation of isolated Mn clusters irrespective of higher crystalline quality of the film. (C) 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

共 16 条

[1] Magnetic circular dichroism studies of carrier-induced ferromagnetism in (Ga1-xMnx)As [J].