Magnetic Behavior at Low Temperature of LaMn1-xMgxO3

Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (4): 643.doi:

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Magnetic Behavior at Low Temperature of LaMn_1-xMg_xO₃

LIANG Hong-Wei¹, CHEN Yan¹, ZHANG Xiao-Xia¹, ZHANG Shi-Jing², ZHANG Gang-Hua¹, YUAN Hong-Ming¹, FENG Shou-Hua^1*

1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,
2. College of Physics, Jilin University, Changchun 130012, China

Received:2008-09-07 Online:2009-04-10 Published:2009-04-10
Contact: FENG Shou-Hua, E-mail:shfeng@jlu.edu.cn
Supported by:
国家自然科学基金(批准号: 20631010, 20771042)资助.

Abstract

Abstract:

The substitution of Mn with Mg in LaMnO₃ strongly affects the magnetic properties at low temperature and the crystal structure of the LaMn_1-xMg_xO₃ system. Sample displays weak ferromagnetic at low tempe-rature when x≤0.08, and the spin-glass state was observed at low temperature when x≥0.18; the existance of nonferromagnetic Mg²⁺ ions in perovskite B site is an important factor for magnetic behavior at low temperature of LaMn_1-xMg_xO₃ samples. Magnetic ordered temperature and spin frozen temperature monotonously decrease with the increase of Mg-substitution.

Key words: Perovskite, Mg-substitution, Spin-glass

CLC Number:

O611

TrendMD:

LIANG Hong-Wei, CHEN Yan, ZHANG Xiao-Xia, ZHANG Shi-Jing, ZHANG Gang-Hua, YUAN Hong-Ming, FENG Shou-Hua. Magnetic Behavior at Low Temperature of LaMn_1-xMg_xO₃[J]. Chem. J. Chinese Universities, 2009, 30(4): 643.

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Magnetic Behavior at Low Temperature of LaMn_1-xMg_xO₃

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