Charge order suppression and weak ferromagnetism in La1/3Sr2/3FeO3 nanoparticles

被引：31
作者：
Gao, F.
Li, P. L.
Weng, Y. Y.
Dong, S.
Wang, L. F.
Lv, L. Y.
Wang, K. F.
Liu, J.-M. [1 ]
Ren, Z. F.
机构：
[1] Nanjing Univ, Solid State Microstruct Lab, Nanjing 210093, Peoples R China
[2] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
[3] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 07期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2768895
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Perovskite-type polycrystalline La1/3Sr2/3FeO3 particles with different sizes (80-2000 nm) were prepared using a simple sol-gel technique. In samples of nanoparticles with a diameter of less than 300 nm, weak ferromagnetism was observed at room temperature, which was attributed to the lattice distortion. The magnetic and specific heat measurements suggest that the charge ordering state was largely suppressed due to the lowering of the particle size, but the charge ordering temperature remained unaffected. (C) 2007 American Institute of Physics.
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页数：3
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