| Epitaxial Growth of Gd0.67 Ca0. 33 MnO3 Thin Films by Laser Ablation |
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| 引用本文： | 马衍伟. Epitaxial Growth of Gd0.67 Ca0. 33 MnO3 Thin Films by Laser Ablation[J]. 中国稀土学报(英文版), 2004, 22(6): 739-742 |
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| 作者姓名： | 马衍伟 |
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| 基金项目： | ProjectsuppurtedbyRegionBretagn，France |
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| 摘 要： | Gd0. 67Ca0. 33MNO3 (GCMO)thin films grown by laser ablation on SrTiO3 (100) (STO)substrates was studied. Films are highly crystallized, very well epitaxial and single-phased. The ordering magnetic temperature (Te)of the films is much higher than the value of bulk samples of similar composition. It is found that the GCMO film exhibits a reversal of its magnetization at low temperature when cooled under a magnetic field. The negative magnetization is a consequence of the rapid increase(～1/T) with decreasing temperature of the magnetization of a sublattice aligned antiparallel to the local field, relative to the magnetic izontribution of a second sublattice which is aligned parallel to the applied field.
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| 关 键 词： | 脉冲激光沉积 薄膜 磁性 晶体生长 Gd0.67Ca0.33MnO3 |
Epitaxial Growth of Gd0.67Ca0.33MnO3 Thin Films by Laser Ablation |
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| Guilloux Viry,Barahona P,Pea O,Moure C. Epitaxial Growth of Gd0.67Ca0.33MnO3 Thin Films by Laser Ablation[J]. Journal of Rare Earths, 2004, 22(6): 739-742 |
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| Authors: | Guilloux Viry Barahona P Pea O Moure C |
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| Affiliation: | Guilloux Viry,Barahona P,Pe(~n)a O,Moure C |
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| Abstract: | Gd0.67Ca0.33MnO3(GCMO)thin films grown by laser ablation on SrTiO3(100)(STO)substrates was studied. Films are highly crystallized, very well epitaxial and single-phased. The ordering magnetic temperature(Tc)of the films is much higher than the value of bulk samples of similar composition. It is found that the GCMO film exhibits a reversal of its magnetization at low temperature when cooled under a magnetic field. The negative magnetization is a consequence of the rapid increase(～1/T)with decreasing temperature of the magnetization of a sublattice aligned antiparallel to the local field, relative to the magnetic contribution of a second sublattice which is aligned parallel to the applied field. |
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| Keywords: | pulsed laser deposition Gd0.67Ca0.33MnO3 thin films magnetic properties |
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