| LaFe11.6Si1.4B0.5快淬带的磁相变和磁熵变 |
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| 引用本文： | 谢鲲,余丽艳,刘立强.LaFe11.6Si1.4B0.5快淬带的磁相变和磁熵变[J].中国稀土学报,2008,26(1):121-124. |
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| 作者姓名： | 谢鲲 余丽艳 刘立强 |
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| 作者单位： | 山东科技大学,材料科学与工程学院,山东,青岛,266510 |
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| 基金项目： | 青岛经济技术开发区科技发展计划 |
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| 摘 要： | 通过熔体快淬法制备了具有NaZn13型立方结构的LaFe11.6Si1.4B0.5化合物。与LaFe11.6Si1.4比较,加入B以后的试样中残余α-Fe杂相的含量显著减少。LaFe11.6Si1.4中加入一定量的B后对居里温度TC没有明显改变,化合物仍然保留了在居里温度附近的一级铁磁/顺磁转变和巡游电子变磁转变特征。LaFe11.6Si1.4B0.5化合物具有和LaFe11.6Si1.4化合物接近的巨大磁熵变,但合成时间可以进一步缩短。
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| 关 键 词： | La(Fe Si)13化合物 熔体快淬 磁相变 磁熵变 稀土 快淬带 磁相变 磁熵变 Magnetic Entropy Change Phase Transition 时间 合成 特征 变磁转变 巡游电子 铁磁 居里温度 定量 含量 杂相 试样 比较 化合物 立方结构 法制 |
| 文章编号： | 1000-4343（2008）01-0121-04 |
| 收稿时间： | 2007-03-12 |
| 修稿时间： | 2007-04-27 |
Magnetic Phase Transition and Magnetic Entropy Change of Melt-Spun LaFe11.6Si1.4B0.5 Ribbons |
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| Xie Kun,Yu Liyan,Liu Liqiang.Magnetic Phase Transition and Magnetic Entropy Change of Melt-Spun LaFe11.6Si1.4B0.5 Ribbons[J].Journal of the Chinese Rare Earth Society,2008,26(1):121-124. |
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| Authors: | Xie Kun Yu Liyan Liu Liqiang |
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| Abstract: | The magnetic phase transition and magnetic entropy change of melt-spun LaFe11.6 Si1.4 Bo.5 ribbons were investigated by measuring the magnetization as a function of temperature. Compared with LaFe11.6Si1.4, the NaZn13-type structure of melt-spun LaFe11.6Si1.4Bo.5 ribbons did not change after introducing B atoms, while the amount of a-Fe phase in the ribbons de-creased significantly. The Curie temperature changed slightly after the addition of B. The LaFe11.6Si1.4B0.5 compound exhibited a first-order magnetic transition and a very large magnetic entropy change, which was also observed in LaFe11.6Si1.4 compound, but the latter compound were obtained by a longer holding time at high temperatures. |
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