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<p>We have successfully grown single crystalline trigonal-type HoAl<InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10948_2025_6974_Article_IEq1.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="8" /> </InlineMediaObject> <EquationSource Format="TEX">\(_{3}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mn>3</mn> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation> sample and comprehensively investigated the magnetic and magnetocaloric properties of both the single crystalline and powder samples. Magnetic susceptibility and specific heat measurements reveal that trigonal HoAl<InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10948_2025_6974_Article_IEq1.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="8" /> </InlineMediaObject> <EquationSource Format="TEX">\(_{3}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mn>3</mn> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation> develops an antiferromagnetic order at <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10948_2025_6974_Article_IEq5.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="23" /> </InlineMediaObject> <EquationSource Format="TEX">\(T_{N}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>T</mi> <mi>N</mi> </msub> </math></EquationSource> </InlineEquation> = 9 K and this order can be continuously suppressed by an external magnetic field. Influenced by crystal electric field effect, HoAl<InlineEquation ID="IEq6"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10948_2025_6974_Article_IEq1.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="8" /> </InlineMediaObject> <EquationSource Format="TEX">\(_{3}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mn>3</mn> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation> possesses obvious magnetic anisotropy in paramagnetic state. The direction-dependent correlation of magnetic susceptibility, magnetic anomaly under specific magnetic fields, and magnetic field-induced magnetic transition suggest the magnetic easy axis tends to parallel to the <i>ab</i>-plane. The magnetic entropy change in isothermal process reflects that the magnetocaloric effect is almost isotropic.</p>

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Single Crystal Growth and Magnetic Properties of Trigonal Phase HoAl\(_{3}\)

  • 期刊论文

  • 发表日期：

    2025年4月28日

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  • Junbao He,
  • Xuechao He,
  • Bo Liu,
  • Jianyu Li,
  • Shishi Ma,
  • Xinyue Li,
  • Yu Fu,
  • Congbin Liu,
  • Yuqi Chen,
  • Yongsong Luo,
  • Hui Liang,
  • Hao Shi

摘要

We have successfully grown single crystalline trigonal-type HoAl \(_{3}\) 3 sample and comprehensively investigated the magnetic and magnetocaloric properties of both the single crystalline and powder samples. Magnetic susceptibility and specific heat measurements reveal that trigonal HoAl \(_{3}\) 3 develops an antiferromagnetic order at \(T_{N}\) T N = 9 K and this order can be continuously suppressed by an external magnetic field. Influenced by crystal electric field effect, HoAl \(_{3}\) 3 possesses obvious magnetic anisotropy in paramagnetic state. The direction-dependent correlation of magnetic susceptibility, magnetic anomaly under specific magnetic fields, and magnetic field-induced magnetic transition suggest the magnetic easy axis tends to parallel to the ab-plane. The magnetic entropy change in isothermal process reflects that the magnetocaloric effect is almost isotropic.