...
首页> 外文期刊>Physical review >Anisotropic magnetocaloric effect and critical behavior in CrSbSe_3
【24h】

Anisotropic magnetocaloric effect and critical behavior in CrSbSe_3

机译:Crsbse_3中的各向异性磁热效应和临界行为

获取原文
获取原文并翻译 | 示例
           

摘要

We report anisotropic magnetocaloric effect and critical behavior in a quasi-one-dimensional ferromagnetic CrSbSe_3 single crystal. The maximum magnetic entropy change -ΔS_M~(max) is 2.16 J kg~(-1) K~(-1) for the easy a axis (2.03 J kg~(-1) K~(-1) for the hard b axis) and the relative cooling power RCP is 163.1 J kg~(-1) for the easy a axis (142.1 J kg~(-1) for the hard b axis) near T_c with a magnetic field change of 50 kOe. The magnetocrystalline anisotropy constant K_u is estimated to be 148.5 kJ m~(-3) at 10 K, decreasing to 39.4 kJ m~(-3) at 70 K. The rescaled ΔS_M(T, H) curves along all three axes collapse onto a universal curve, respectively, confirming the second-order ferromagnetic transition. Further critical behavior analysis around T_c ~ 70 K gives that the critical exponents β = 0.26(1), γ = 1.32(2), and δ = 6.17(9) for H ‖ a, while β = 0.28(2), γ = 1.02(1), and δ =4.14(16) for H ‖ b. The determined critical exponents suggest that the anisotropic magnetic coupling in CrSbSe_3 is strongly dependent on orientations of the applied magnetic field.
机译:我们在准一维铁磁性CRSBSE_3单晶中报告各向异性磁热效应和临界行为。最大磁熵变更-Δs_m〜(max)为2.16 j kg〜(-1)k〜(-1),用于硬b的易轴(2.03 kg〜(-1)k〜(1)轴)和相对冷却功率RCP为163.1J kg〜(-1),用于易于轴(142.1j kg〜(-1)用于硬b轴的T_c,磁场变化为50只koe。磁晶各向异性常数K_U在10 k下估计为148.5kJ m〜(-3),在70k下降至39.4kj m〜(-3)。重新定位的Δs_m(t,h)沿着所有三个轴塌陷分别是一种通用曲线,确认二阶铁磁转变。 T_C〜70k周围的进一步临界行为分析使得H = a的临界指数β= 0.26(1),γ= 1.32(2),Δ= 6.17(9),而β= 0.28(2),γ= 1.02(1),和δ= 4.14(16)用于H‖B。所确定的关键指数表明CRSBSE_3中的各向异性磁耦合强烈地取决于所施加磁场的取向。

著录项

  • 来源
    《Physical review》 |2020年第1期|014425.1-014425.6|共6页
  • 作者

    Yu Liu; Zhixiang Hu; C. Petrovic;

  • 作者单位

    Department of Condensed Matter Physics and Materials Science Brookhaven National Laboratory Upton New York 11973 USA;

    Department of Condensed Matter Physics and Materials Science Brookhaven National Laboratory Upton New York 11973 USA Department of Materials Science and Chemical Engineering Stony Brook University Stony Brook New York 11790 USA;

    Department of Condensed Matter Physics and Materials Science Brookhaven National Laboratory Upton New York 11973 USA Department of Materials Science and Chemical Engineering Stony Brook University Stony Brook New York 11790 USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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