Magnetic properties of La0.7Ca0.3MnO3 nanoparticles prepared by reactive milling

被引：19

作者：

Manh, Do Hung ^{[1
]}

Thuan, Nguyen Chi ^{[1
]}

Phong, Pham Thanh ^{[2
]}

Van Hong, Le ^{[1
]}

Phuc, Nguyen Xuan ^{[1
]}

机构：

[1] Vietnamese Acad Sci & Technol, Inst Mat Sci, Hanoi, Vietnam

[2] Nha Trang Pedag Coll, Nha Trang, Khanh Hoa Prov, Vietnam

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 479卷 / 1-2期

关键词：

Manganite; La0.7Ca0.3MnO3; Nanoparticles; Magnetic property;

D O I：

10.1016/j.jallcom.2009.01.049

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

La0.7Ca0.3MnO3 (LCMO) nanoparticles were synthesized by reactive milling in ambient conditions. Magnetic properties of LCMO single-phase nanocrystalline particles were studied. LCMO nanoparticles exhibit superparamagnetism with blocking temperature that decreases in the logarithmic function as increasing applied magnetic field. Besides, the blocking temperature decreases as increasing milling time from 8 h to 16 h. The temperature dependence of the saturation magnetization shows a strong collective excitation due to the spin wave that depends on temperature in form T-alpha with alpha = 1.7, which slightly deviates from the Bloch law. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：828 / 831

页数：4

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