Temperature-dependent structure and magnetization of YCrO$_3$ compound
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
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2021
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| _version_ | 1866909129846554624 |
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| author | Zhao, Qian Zhu, Yinghao Wu, Si Xia, Junchao Zhou, Pengfei Sun, Kaitong Li, Hai-Feng |
| author_facet | Zhao, Qian Zhu, Yinghao Wu, Si Xia, Junchao Zhou, Pengfei Sun, Kaitong Li, Hai-Feng |
| contents | We have grown a YCrO$_3$ single crystal by the floating-zone method and studied its temperature-dependent crystalline structure and magnetization by X-ray powder diffraction and PPMS DynaCool measurements. All diffraction patterns were well indexed by an orthorhombic structure with space group of $Pbnm$ (No. 62). From 36 to 300 K, no structural phase transition occurs in the pulverized YCrO$_3$ single crystal. The antiferromagnetic phase transition temperature was determined as $T_\textrm{N} =$ 141.58(5) K by the magnetization versus temperature measurements. We found weak ferromagnetic behavior in the magnetic hysteresis loops below $T_\textrm{N}$. Especially, we demonstrated that the antiferromagnetism and weak ferromagnetism appear simutaniously upon cooling. The lattice parameters ($a$, $b$, $c$, and $V$) deviate downward from the Gr$\ddot{\textrm{u}}$neisen law, displaying an anisotropic magnetostriction effect. We extracted temperature variation of the local distortion parameter $Δ$. Compared to the $Δ$ value of Cr ions, Y, O1, and O2 ions show one order of magnitude larger $Δ$ values indicative of much stronger local lattice distortions. Moreover, the calculated bond valence states of Y and O2 ions have obvious subduction charges. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2109_11751 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Temperature-dependent structure and magnetization of YCrO$_3$ compound Zhao, Qian Zhu, Yinghao Wu, Si Xia, Junchao Zhou, Pengfei Sun, Kaitong Li, Hai-Feng Strongly Correlated Electrons Materials Science We have grown a YCrO$_3$ single crystal by the floating-zone method and studied its temperature-dependent crystalline structure and magnetization by X-ray powder diffraction and PPMS DynaCool measurements. All diffraction patterns were well indexed by an orthorhombic structure with space group of $Pbnm$ (No. 62). From 36 to 300 K, no structural phase transition occurs in the pulverized YCrO$_3$ single crystal. The antiferromagnetic phase transition temperature was determined as $T_\textrm{N} =$ 141.58(5) K by the magnetization versus temperature measurements. We found weak ferromagnetic behavior in the magnetic hysteresis loops below $T_\textrm{N}$. Especially, we demonstrated that the antiferromagnetism and weak ferromagnetism appear simutaniously upon cooling. The lattice parameters ($a$, $b$, $c$, and $V$) deviate downward from the Gr$\ddot{\textrm{u}}$neisen law, displaying an anisotropic magnetostriction effect. We extracted temperature variation of the local distortion parameter $Δ$. Compared to the $Δ$ value of Cr ions, Y, O1, and O2 ions show one order of magnitude larger $Δ$ values indicative of much stronger local lattice distortions. Moreover, the calculated bond valence states of Y and O2 ions have obvious subduction charges. |
| title | Temperature-dependent structure and magnetization of YCrO$_3$ compound |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2109.11751 |