Ferromagnetic semiconductor ZnGeAs2 {Mn} with a curie point of 367 K

被引：0
作者：
V. M. Novotortsev
S. F. Marenkin
S. A. Varnavskii
L. I. Koroleva
T. A. Kupriyanova
R. Szymczak
L. Kilanski
B. Krzymanska
机构：
[1] Russian Academy of Sciences,Kurnakov Institute of General and Inorganic Chemistry
[2] Moscow State University,Institute of Physics
[3] Polish Academy of Sciences,undefined
来源：
Russian Journal of Inorganic Chemistry | 2008年 / 53卷
关键词：
Spin Glass; Spontaneous Magnetization; High Curie Temperature; Substitutional Solid Solution; Anomalous Hall Effect;
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学科分类号：
摘要：
Germanium zinc diarsenide crystals with various manganese fractions, (ZnGeMn)As2, were prepared by reacting high-purity powders of zinc diarsenide, germanium, arsenic, and manganese. The manganese solubility at temperatures near the ZnGeAs2 melting temperature was 3.5 wt % as determined by X-ray fluorescence analysis. The unit cell volume decreased with rising manganese concentration. Magnetization in fields up to 50 kOe, magnetic susceptibility, electrical resistance, and Hall constants were measured over wide temperature ranges. Manganese-doped samples had spontaneous magnetization and high Curie temperatures reaching 367 K. Their magnetic properties are characteristic of spin glasses in low magnetic fields. In higher fields, the spin state changed to spontaneous magnetization.
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页码：22 / 29
页数：7
相关论文
共 28 条
[1]  
Ohno H.(1998)undefined Science 281 951-undefined
[2]  
Medvedkin G. A.(2001)undefined Fiz. Tekh. Poluprovodn. (S.-Peterburg) 35 305-undefined
[3]  
Ishibashi T.(2003)undefined J. Korean Phys. Soc. 42 S739-undefined
[4]  
Nishi T.(2006)undefined Zh. Neorg. Khim. 51 1153-undefined
[5]  
Sato K.(2004)undefined Pis’ma Zh. Tekh. Fiz. 30 81-undefined
[6]  
Choi S.(2005)undefined Zh. Neorg. Khim. 50 552-undefined
[7]  
Choi J.(1998)undefined Phys. Rev. Lett. 81 3002-undefined
[8]  
Hong S. C.(2000)undefined J. Phys. Soc. Jpn. A 69 112-undefined
[9]  
Cho S.(2002)undefined Phys. Rev. Lett. 88 047205-undefined
[10]  
Novotortsev V. M.(2001)undefined Phys. Rev. B: Condens. Matter 63 201202-undefined
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