| Influence of annealing on spin state of cobalt ions in La1-xSrxCoO3（0≤x≤0.5） system |
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| 引用本文： | 蒋丽珍,许祝安. Influence of annealing on spin state of cobalt ions in La1-xSrxCoO3（0≤x≤0.5） system[J]. 中国稀土学报(英文版), 2009, 27(1): 92-95. DOI: 10.1016/S1002-0721(08)60198-2 |
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| 作者姓名： | 蒋丽珍 许祝安 |
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| 作者单位： | JIANG Lizhen(College of Information and Electronic Engineering, Zhejiang Gongshang University, Hangzhou 310018, China);XU Zhuan(Department of Physics Zhejiang University Hangzhou 310027 China) |
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| 基金项目： | 国家自然科学基金，浙江省自然科学基金 |
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| 摘 要： |
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| 关 键 词： | 退火条件 钴离子 自旋态 钙钛矿氧化物 系统 晶体结构 敏感性能 有效磁矩 |
| 收稿时间： | 2007-12-30 |
Influence of annealing on spin state of cobalt ions inLa1-xSrxCoO3 (0≤x≤0.5) system |
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| JIANG Lizhen,XU Zhuan. Influence of annealing on spin state of cobalt ions inLa1-xSrxCoO3 (0≤x≤0.5) system[J]. Journal of Rare Earths, 2009, 27(1): 92-95. DOI: 10.1016/S1002-0721(08)60198-2 |
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| Authors: | JIANG Lizhen XU Zhuan |
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| Affiliation: | JIANG Lizhen , XU Zhu＇an (1. College of Information and Electronic Engineering, Zhejiang Gongshang University, Hangzhou 310018, China; 2. Department of Physics, Zhejiang University, Hangzhou 310027, China) |
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| Abstract: | Perovskite oxide La1-xSrxCoO3 (0≤x≤0.5) series were prepared and effect of oxygen annealing on crystal structure and magnetic susceptibility were studied. High-temperature susceptibility could be well fitted by Curie-Weiss law for all Sr-doped samples. Weiss constant and effective magnetic moment were determined, and their variations with Sr doping and oxygen annealing condition were obtained. The result suggested that by assuming that the Co3+ ions were in the intermediate-spin (IS) state, most of the Co4+ ions in the as-prepared samples might be in the high-spin (HS) state, but both the Co3+ and Co4+ ions might be in the IS state after oxygen annealing, which indicated that annealing in flowing oxygen could cause transition of the spin state of Co4+ ions from the HS state to IS state. |
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| Keywords: | La1-xSrxCoO3 oxygen annealing magnetic susceptibility spin state rare earths |
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