Origin of elevated ordering temperature in MnFe2O4 nanometer particles
被引:13
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作者:
Morrish, AH
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机构:Department of Physics, University of Manitoba, Winnipeg
Morrish, AH
Li, ZW
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机构:Department of Physics, University of Manitoba, Winnipeg
Li, ZW
Zhou, XZ
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机构:Department of Physics, University of Manitoba, Winnipeg
Zhou, XZ
机构:
[1] Department of Physics, University of Manitoba, Winnipeg
来源:
JOURNAL DE PHYSIQUE IV
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1997年
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7卷
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C1期
关键词:
D O I:
10.1051/jp4:19971209
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
Mossbauer spectra of MnFe2O4 with various particle sizes in a longitudinal 50 kOe magnetic field show that the Fe ion occupancy of the A and B crystallographic sites depends on the particle size. The elevated Neel temperatures with decreasing particle sizes are attributed to an increased iron occupancy on the A sites; this in turn leads to an increase in the total superexchange interaction.
机构:
Hunan Univ Technol, Fac Packaging & Mat Engn, Key Lab Green Packaging & Biol Nanotechnol, Zhuzhou 412007, Peoples R ChinaHunan Univ Technol, Fac Packaging & Mat Engn, Key Lab Green Packaging & Biol Nanotechnol, Zhuzhou 412007, Peoples R China
He, Quanguo
Liu, Jun
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机构:
Hunan Univ Technol, Fac Packaging & Mat Engn, Key Lab Green Packaging & Biol Nanotechnol, Zhuzhou 412007, Peoples R ChinaHunan Univ Technol, Fac Packaging & Mat Engn, Key Lab Green Packaging & Biol Nanotechnol, Zhuzhou 412007, Peoples R China
Liu, Jun
Liang, Jing
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机构:
Hunan Univ Technol, Fac Packaging & Mat Engn, Key Lab Green Packaging & Biol Nanotechnol, Zhuzhou 412007, Peoples R ChinaHunan Univ Technol, Fac Packaging & Mat Engn, Key Lab Green Packaging & Biol Nanotechnol, Zhuzhou 412007, Peoples R China
Liang, Jing
Huang, Chunyan
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机构:
Hunan Univ Technol, Fac Packaging & Mat Engn, Key Lab Green Packaging & Biol Nanotechnol, Zhuzhou 412007, Peoples R ChinaHunan Univ Technol, Fac Packaging & Mat Engn, Key Lab Green Packaging & Biol Nanotechnol, Zhuzhou 412007, Peoples R China
Huang, Chunyan
Li, Wen
论文数: 0引用数: 0
h-index: 0
机构:
Hunan Univ Technol, Fac Packaging & Mat Engn, Key Lab Green Packaging & Biol Nanotechnol, Zhuzhou 412007, Peoples R ChinaHunan Univ Technol, Fac Packaging & Mat Engn, Key Lab Green Packaging & Biol Nanotechnol, Zhuzhou 412007, Peoples R China