引用本文:
夏熙, 潘存信. 固体反应法制备纳米LaCoyMn1-yO3系复合氧化物及其表征[J]. 应用化学,
2001, 18(2): 96-99.
Citation: XIA Xi, PAN Cun-Xin. Preparation and Characteristics of Nanophase LaCoyMn1-yO3 by Solid State Reaction[J]. Chinese Journal of Applied Chemistry, 2001, 18(2): 96-99.
Citation: XIA Xi, PAN Cun-Xin. Preparation and Characteristics of Nanophase LaCoyMn1-yO3 by Solid State Reaction[J]. Chinese Journal of Applied Chemistry, 2001, 18(2): 96-99.
固体反应法制备纳米LaCoyMn1-yO3系复合氧化物及其表征
摘要:
采用研磨固相反应法制备LaCoyMn1-yO3钙钛矿型复合氧化物纳米微粒.利用XRD、TG-DTA、TEM技术研究了LaCoyMn1-yO3的形成过程,并考察了微粒形貌及其平均粒径.用交流阻抗法和磁天平测定了样品的电导率和磁化率,结果表明,当取代量y=0.5时,其电导与磁化率均最小,并初步作了机理探讨.
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关键词:
- 镧/钴/锰复合氧化物
- / 制备
- / 固相反应
- / 纳米微粒
- / 物理性质
English
Preparation and Characteristics of Nanophase LaCoyMn1-yO3 by Solid State Reaction
Abstract:
The nanophase LaCoyMn1-yO3(0≤y≤1) has been prepared by solid state reaction and characterized by XRD, TG/DTA, TEM and atomic absorption spectrometry. The results showed that the compound is of perovskite type and the crystals of some samples are distored, but not collapsed. The AC impedance and magnetic balance results indicated that when y=0.5 the compound has minimum value both in conductivity and magnetic susceptibility, which was interpreted in terms of minimum value of unpaired electron number of the compound at this condition.
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Key words:
- La/Co/Mn complex oxide
- / solid state reaction
- / nanophase particle
- / physical property
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