首页> 外文期刊>RSC Advances >Ab initio mechanical and thermal properties of FeMnP1?xGax compounds as refrigerant for room-temperature magnetic refrigeration
【24h】

Ab initio mechanical and thermal properties of FeMnP1?xGax compounds as refrigerant for room-temperature magnetic refrigeration

机译:FeMnP 1? x Ga x 化合物的从头算力学和热学性质常温磁性制冷剂

获取原文
           

摘要

Density functional theory was used to identify possible Fe2P-type giant magnetocaloric FeMnP1?xGax compounds. The calculated formation energies, elastic constants and phonon spectra confirm the energetic, mechanical and dynamical stability of hexagonal FeMnP1?xGax compounds in both the ferromagnetic and paramagnetic states. The predicted magnetic moment, elastic properties, and Curie temperature of FeMnP0.67Ga0.33 are close to those obtained for FeMnP0.67Ge0.33 compounds using the same calculation scheme. The entropy changes and latent heat of FeMnP0.67Ga0.33 are similar with those of FeMnP0.67Ge0.33. The electronic density of states and charge density analysis indicate that the FeMnP1?xGax compounds have similar electronic structures to those of FeMnP1?xGex. These results predict that FeMnP1?xGax is a possible candidate refrigerant for room-temperature magnetic refrigeration.
机译:密度泛函理论用于确定可能的Fe 2 P型巨磁热FeMnP 1? x Ga x 化合物。计算得出的形成能,弹性常数和声子谱证实了六方型FeMnP 1? x Ga <的能量,机械和动力学稳定性。处于铁磁和顺磁状态的sub> x 化合物。 FeMnP 0.67 Ga 0.33 的预测磁矩,弹性和居里温度都接近于FeMnP 0.67 Ge 0.33 化合物使用相同的计算方案。 FeMnP 0.67 Ga 0.33 的熵变和潜热与FeMnP 0.67 Ge 0.33 。态电子密度和电荷密度分析表明FeMnP 1? x Ga x 化合物具有与FeMnP 1? x Ge 相似的电子结构。 x 。这些结果表明,FeMnP 1? x Ga x 是用于室温磁制冷的可能的候选制冷剂。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号