Large enhancement of ferromagnetism by Cr doping in Mn3O4 nanowires

被引：11
作者：
Li, GaoMin [1 ]
Tang, XiaoBing [1 ]
Lou, ShiYun [1 ]
Zhou, ShaoMin [1 ]
机构：
[1] Henan Univ, Minist Educ, Key Lab Special Funct Mat, Kaifeng 475004, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 17期
基金：
中国国家自然科学基金;
关键词：
ROOM-TEMPERATURE FERROMAGNETISM; THIN-FILMS; OPTICAL-PROPERTIES; GAN; NANOPARTICLES; FABRICATION; EXCHANGE; OXIDES; XPS; ALN;
D O I：
10.1063/1.4874272
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The Mn3O4 nanostructures having low temperature Curie point (45 K) disqualify them for most practical applications. In this work, single-crystalline Cr-doped Mn3O4 nanowires with ferromagnetic Curie point at room temperature (305 K) have been investigated. Our experimental results show an increase in effective magnetic moment per gram as Cr3+ replaces Mn3+ and oxygen vacancies, which result in a transition from paramagnetic (Mn3O4) to ferromagnetic. The doped Cr3+ and oxygen vacancies reveal the remarkable ferromagnetic in Mn3-xCrxO4 nanowires may be ascribed to bound magnetic polarons model. Our experimental results suggest these obtained nanowires are promising nanoscale building blocks in spintronic devices. (C) 2014 AIP Publishing LLC.
引用
收藏
页数：5
相关论文
共 32 条
  • [1] Correlation between saturation magnetization, bandgap, and lattice volume of transition metal (M=Cr, Mn, Fe, Co, or Ni) doped Zn1-xMxO nanoparticles
    Anghel, J.
    Thurber, A.
    Tenne, D. A.
    Hanna, C. B.
    Punnoose, A.
    [J]. JOURNAL OF APPLIED PHYSICS, 2010, 107 (09) : 1019
  • [2] Direct observation of sp-d exchange interactions in colloidal Mn2+- and Co2+-doped CdSe quantum dots
    Archer, Paul I.
    Santangelo, Steven A.
    Gamelin, Daniel R.
    [J]. NANO LETTERS, 2007, 7 (04) : 1037 - 1043
  • [3] Modification of the electronic properties of GaN nanowires by Mn doping
    Chen, Xihong
    Lee, Seung Joon
    Moskovits, Martin
    [J]. APPLIED PHYSICS LETTERS, 2007, 91 (08)
  • [4] Donor impurity band exchange in dilute ferromagnetic oxides
    Coey, JMD
    Venkatesan, M
    Fitzgerald, CB
    [J]. NATURE MATERIALS, 2005, 4 (02) : 173 - 179
  • [5] Zener model description of ferromagnetism in zinc-blende magnetic semiconductors
    Dietl, T
    Ohno, H
    Matsukura, F
    Cibert, J
    Ferrand, D
    [J]. SCIENCE, 2000, 287 (5455) : 1019 - 1022
  • [6] Role of p-d and s-d interactions in the electronic structure and band gap of Zn1-xMxO (M = Cr, Mn, Fe, Co, Ni, and Cu): Photoelectron and optical spectroscopy and first-principles band structure calculations
    Gilliland, S. J.
    Sans, J. A.
    Sanchez-Royo, J. F.
    Almonacid, G.
    Garcia-Domene, B.
    Segura, A.
    Tobias, G.
    Canadell, E.
    [J]. PHYSICAL REVIEW B, 2012, 86 (15)
  • [7] Controlled synthesis, characterization, and catalytic properties of Mn2O3 and Mn3O4 nanoparticles supported on mesoporous silica SBA-15
    Han, Yi-Fan
    Chen, Fengxi
    Zhong, Ziyi
    Ramesh, Kanaparthi
    Chen, Luwei
    Widjaja, Effendi
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (48) : 24450 - 24456
  • [8] Room temperature ferromagnetism in Cr-doped In2O3 on high vacuum annealing of thin films and bulk samples
    Kharel, P.
    Sudakar, C.
    Sahana, M. B.
    Lawes, G.
    Suryanarayanan, R.
    Naik, R.
    Naik, V. M.
    [J]. JOURNAL OF APPLIED PHYSICS, 2007, 101 (09)
  • [9] X-ray photoelectron spectroscopy of surface-treated indium-tin oxide thin films
    Kim, JS
    Ho, PKH
    Thomas, DS
    Friend, RH
    Cacialli, F
    Bao, GW
    Li, SFY
    [J]. CHEMICAL PHYSICS LETTERS, 1999, 315 (5-6) : 307 - 312
  • [10] High curie temperatures in ferromagnetic Cr-doped AlN thin films
    Kumar, D
    Antifakos, J
    Blamire, MG
    Barber, ZH
    [J]. APPLIED PHYSICS LETTERS, 2004, 84 (24) : 5004 - 5006
1234