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Robust ferromagnetism of single crystalline CoxZn1-xO (0.3 <= x <= 0.45) epitaxial films with high Co concentration
Cao, Q; Zhu, DP; Fu, MX; Cai, L; Yang, P; Li, S; Zhu, YL; Ma, XL; Liu, GL; Chen, YX; Yan, SS; Mei, LM; Wang, XL; Liu, GL (reprint author), Shandong Univ, Sch Phys, Jinan 250100, Peoples R China.; Liu, GL (reprint author), Shandong Univ, Natl Key Lab Crystal Mat, Jinan 250100, Peoples R China.; Cao, Q (reprint author), Qufu Normal Univ, Sch Phys & Engn, Qufu 273165, Peoples R China.
2016-08-01
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume109Issue:5
AbstractIn contrast to conventional dilute magnetic semiconductors with concentrations of magnetic ions of just a few percent, here, we report the fabrication of epitaxial CoxZn1-xO single crystalline films with Co concentrations from x = 0.3 up to 0.45 by radio-frequency oxygen-plasma-assisted molecular beam epitaxy. The films retain their single crystalline wurtzite structure without any other crystallographic phase from precipitates, based on reflection high energy electron diffraction, X-ray diffraction, transmission electron microscopy, and Raman scattering. The results of X-ray diffraction, optical transmission spectroscopy, and in-situ X-ray photoelectron spectroscopy confirm the incorporation of Co2+ cations into the wurtzite lattice. The films exhibit robust ferromagnetism and the magneto-optical Kerr effect at room temperature. The saturation magnetization reaches 265 emu/cm(3) at x = 0.45, which corresponds to the average magnetic moment of 1.5 mu(B) per Co atom. Published by AIP Publishing.
description.department[cao, qiang ; zhu, dapeng ; fu, maoxiang ; cai, li ; liu, guolei ; chen, yanxue ; yan, shishen ; mei, liangmo] shandong univ, sch phys, jinan 250100, peoples r china ; [cao, qiang ; zhu, dapeng ; fu, maoxiang ; cai, li ; liu, guolei ; chen, yanxue ; yan, shishen ; mei, liangmo] shandong univ, natl key lab crystal mat, jinan 250100, peoples r china ; [cao, qiang] qufu normal univ, sch phys & engn, qufu 273165, peoples r china ; [yang, ping] natl univ singapore, singapore synchrotron light source, 5 res link, singapore 117603, singapore ; [li, shuang ; zhu, yinlian ; ma, xiuliang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [wang, xiaolin] univ wollongong, australian inst innovat mat, inst superconducting & elect mat, innovat campus, north wollongong, nsw 2500, australia
Subject AreaPhysics, Applied
Funding OrganizationState Key Project of Fundamental Research of China [2013CB922303, 2015CB921400]; NSFC [51125004]; NSF [11374189, 51231007]; 111 project [B13029]; SSLS via NUS [C-380-003-003-001]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/76314
Collection中国科学院金属研究所
Corresponding AuthorCao, Q; Liu, GL (reprint author), Shandong Univ, Sch Phys, Jinan 250100, Peoples R China.; Liu, GL (reprint author), Shandong Univ, Natl Key Lab Crystal Mat, Jinan 250100, Peoples R China.; Cao, Q (reprint author), Qufu Normal Univ, Sch Phys & Engn, Qufu 273165, Peoples R China.
Recommended Citation
GB/T 7714
Cao, Q,Zhu, DP,Fu, MX,et al. Robust ferromagnetism of single crystalline CoxZn1-xO (0.3 <= x <= 0.45) epitaxial films with high Co concentration[J]. APPLIED PHYSICS LETTERS,2016,109(5).
APA Cao, Q.,Zhu, DP.,Fu, MX.,Cai, L.,Yang, P.,...&Cao, Q .(2016).Robust ferromagnetism of single crystalline CoxZn1-xO (0.3 <= x <= 0.45) epitaxial films with high Co concentration.APPLIED PHYSICS LETTERS,109(5).
MLA Cao, Q,et al."Robust ferromagnetism of single crystalline CoxZn1-xO (0.3 <= x <= 0.45) epitaxial films with high Co concentration".APPLIED PHYSICS LETTERS 109.5(2016).
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