The magnetic phase diagram and large reversible room-temperature magnetocaloric effect in antiperovskite compounds Zn1−xSnxCFe3 (0 ≤ x ≤ 1)
The magnetic phase diagram and large reversible room-temperature magnetocaloric effect in antiperovskite compounds Zn1−xSnxCFe3 (0 ≤ x ≤ 1)
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DOI：
10.1063/1.4752275
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发表时间：
2012-09
影响因子：
3.2
通讯作者：
S. Lin;B. Wang;P. Tong;Yanan Huang;Z. H. Huang;Y. Liu;S. Tan;W. Lu;B. Zhao;Wen-li Song;Y. Sun
中科院分区：
文献类型：
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作者：
S. Lin;B. Wang;P. Tong;Yanan Huang;Z. H. Huang;Y. Liu;S. Tan;W. Lu;B. Zhao;Wen-li Song;Y. Sun
我们报道了反钙钛矿化合物Zn 1 − xSnxCFe 3（0 ≤ x ≤ 1）的磁相图。系统地研究了Zn/Sn比对样品结构、磁性和电输运性质的影响。随着Sn含量x的增加，晶格常数逐渐增大，居里温度和饱和磁化强度逐渐降低。所有的电阻率曲线的Zn 1 − xSnxCFe 3显示出金属的行为在测量的温度范围内（2-350 K）。特别地，对于x ≤ 0.3的所有样品，在低温下获得电阻率的T2幂律依赖性。值得注意的是，当x = 0.1时，TC仅在室温（10300 K）下调谐。在TC附近，磁热效应相当大，磁熵变为2.78 J/kg K（ΔH = 45 kOe），相对冷却功率（RCP）为320 J/kg（ΔH = 45 kOe）。考虑到反应堆体积较大、工作温度适宜、原材料价廉无害等因素，锌基复合材料具有良好的应用前景。
We report the magnetic phase diagram of antiperovskite compounds Zn1−xSnxCFe3 (0 ≤ x ≤ 1). The effects of the ratio of Zn/Sn on the structure, magnetic and electrical transport properties have been investigated systematically. With increasing the Sn content x, the lattice constant increases while both the Curie temperature (TC) and the saturated magnetization decrease gradually. All the resistivity curves of Zn1−xSnxCFe3 show a metal-like behavior in measured temperature range (2–350 K). In particular, the T2-power-law dependence of the electrical resistivity is obtained at low temperatures for all samples with x ≤ 0.3. It is noteworthy that, for x = 0.1, the TC is tuned just at the room temperature (∼300 K). Around TC, the magnetocaloric effect is considerably large with a magnetic entropy change of 2.78 J/kg K (ΔH = 45 kOe) as well as a relative cooling power (RCP) of 320 J/kg (ΔH = 45 kOe). Considering the considerably large RCP, suitable working temperature, inexpensive and innoxious raw materials, Zn...