Nonmagnetic Sc Substitution in a Perovskite Ferromagnetic Insulator Pr0.8Ca0.2MnO3
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概要
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The effect of nonmagnetic substitution in a perovskite ferromagnetic insulator Pr0.8Ca0.2MnO3 was studied in epitaxial Pr0.8Ca0.2Mn1-yScyO3 thin films grown on SrTiO3 substrates. An increasing Sc substitution level weakened the ferromagnetic order, resulting in a decrease of saturation magnetization and the ferromagnetic transition temperature. Analysis of transport properties and Raman spectra indicates that besides simple spin dilution, weakening of both the double-exchange interaction and orbital order contributes to the reduction of ferromagnetic order.
- 2013-01-15
著者
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Takahashi Ryota
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
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Harada Takayuki
Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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LIPPMAA Mikk
Institute for Solid State Physics, The University of Tokyo
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Lippmaa Mikk
Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Takahashi Ryota
Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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