Structure and magnetic properties of Mn-doped ZnO nanoparticles
Structure and magnetic properties of Mn-doped ZnO nanoparticles
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DOI：
10.1063/1.1873058
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发表时间：
2005-04
影响因子：
3.2
通讯作者：
J. Luo;J. Liang;Quanlin Liu;Franklin Liu;Yuzhi Zhang;B. Sun;G. Rao
中科院分区：
文献类型：
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作者：
J. Luo;J. Liang;Quanlin Liu;Franklin Liu;Yuzhi Zhang;B. Sun;G. Rao
报道了用燃烧法合成的Zn_（1-x）Mn_xO化合物的晶体结构和磁性。Zn_（1-x）Mn_xO（x=0-0.1）化合物以纤锌矿结构存在。Zn_（1-x）Mn_xO的晶格常数a和c随Mn含量的增加而线性增加，表明Mn ~（2+）离子取代了Zn ~（2+）离子。扫描电镜观察表明，Zn_（0.95）Mn_（0.05）O的平均粒径约为40 nm。从高温磁化率的Curie-Weiss行为发现，Mn-Mn相互作用以反铁磁耦合为主，有效最近邻交换常数J约为-32K，Curie-Weiss温度为大负值。(C)2005年美国物理学会。
We report the crystal structure and magnetic properties of the Zn1-xMnxO compounds synthesized by a combustion method. The Zn1-xMnxO compounds with x=0-0.1 crystallize in the wurtzite ZnO structure. The lattice parameters a and c of Zn1-xMnxO increase linearly with the Mn content, indicating that Mn2+ ions substitute for Zn2+ ions. Scanning electron microscopy shows that the average particle radius of Zn0.95Mn0.05O is about 40 nm. From the Curie-Weiss behavior of susceptibility at high temperature, it was found that the Mn-Mn interaction is dominated by antiferromagnetic coupling with effective nearest-neighbor exchange constant J about -32 K and the large negative value of the Curie-Weiss temperature. (C) 2005 American Institute of Physics.