Structural, magnetic properties and magnetocaloric effect in Ni-doped antiperovskite compounds GaCMn3-xNix (0  = x  = 0.10)

Wang BS; Tong P; Sun YP; Tang W; Li LJ; Zhu XB; Yang ZR; Song WH

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Structural, magnetic properties and magnetocaloric effect in Ni-doped antiperovskite compounds GaCMn3-xNix (0 = x = 0.10)

机译：掺镍的钙钛矿型化合物GaCMn3-xNix（0 <= x <= 0.10）的结构，磁性和磁热效应

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The effects of Ni substitution on the structure, magnetic properties and magnetocaloric effect (MCE) of antipervoskite compounds GaCMn3-xNix (0 <= x <= 0.10) have been investigated systematically. As the doping level x increases, both the Curie temperature T-C and the saturated magnetization M-S at 200 K increase, while the antiferromagnetic ground state gradually decreases. The observed behavior could be well interpreted by considering the lattice shrinkage and band filling effects. The magnetic entropy change Delta S-M with an applied field change of 48 kOe shows a plateau-like temperature dependent behavior for x=0.05, 0.07 and a caret-like behavior for x=0.10. Our results indicate that the magnetic properties and MCE of GaCMn3 may be easily tunable by chemical doping in Mn site.

机译：系统地研究了Ni取代对反钙钛矿化合物GaCMn3-xNix（0 <= x <= 0.10）的结构，磁性和磁热效应（MCE）的影响。随着掺杂水平x的增加，居里温度T-C和200K下的饱和磁化强度M-S都增加，而反铁磁性基态逐渐降低。考虑到晶格收缩和条带填充效应，可以很好地解释观察到的行为。磁场变化为48 kOe时的磁熵变Delta S-M在x = 0.05、0.07时表现出类似平台的温度相关行为，在x = 0.10时表现出类似插入符号的行为。我们的结果表明，GaCMn3的磁性能和MCE可以通过在Mn位置进行化学掺杂而容易地调节。

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《Physica, B. Condensed Matter》 |2010年第10期|共4页
作者
Wang BS; Tong P; Sun YP; Tang W; Li LJ; Zhu XB; Yang ZR; Song WH;
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正文语种 eng
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Antiperovskite; Magnetocaloric; Magnetic properties; GaCMn3-xNix;

机译：钙钛矿;磁热;磁性;GaCMn3-xNix;

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Structural, magnetic properties and magnetocaloric effect in Ni-doped antiperovskite compounds GaCMn3-xNix (0 = x = 0.10)

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