Synthesis, disorder and Ising anisotropy in a new spin liquid candidate PrMgAl11O19

Yantao Cao; Huanpeng Bu; Zhendong Fu; Jinkui Zhao; Jason S. Gardner; Zhongwen Ouyang; Zhaoming Tian; Zhiwei Li; Hanjie Guo

doi:10.1088/2752-5724/ad4a93

Synthesis, disorder and Ising anisotropy in a new spin liquid candidate PrMgAl₁₁O₁₉

Yantao Cao
, Huanpeng Bu
, Zhendong Fu
, Jinkui Zhao
, Jason S. Gardner
, Zhongwen Ouyang
, Zhaoming Tian
, Zhiwei Li
, Hanjie Guo

Materials Science and Technology Div

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Here we report the successful synthesis of large single crystals of triangular frustrated PrMgAl₁₁O₁₉ using the optical floating zone technique. Single crystal x-ray diffraction (XRD) measurements unveiled the presence of quenched disorder within the mirror plane, specifically ~7% of Pr ions deviating from the ideal 2d site towards the 6h site. Magnetic susceptibility measurements revealed an Ising anisotropy with the c-axis being the easy axis. Despite a large spin-spin interaction that develops below ~10 K and considerable site disorder, the spins do not order or freeze down to at least 50 mK. The availability of large single crystals offers a distinct opportunity to investigate the exotic magnetic state on a triangular lattice with an easy axis out of the plane.

Original language	English
Article number	035201
Journal	Materials Futures
Volume	3
Issue number	3
DOIs	https://doi.org/10.1088/2752-5724/ad4a93
State	Published - Sep 1 2024

Funding

This research was funded by the Guangdong Basic and Applied Basic Research Foundation (Grant No. 2022B1515120020), and the NSF of China with Grant Nos. 12004270 and 11874158. A portion of this work was performed on the Steady High Magnetic Field Facilities, High Magnetic Field Laboratory, CAS. A portion of this work was supported by the Laboratory Directed Research and Development (LDRD) program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC for the U.S. Department of Energy.

Keywords

Ising anisotropy
disorder
frustration
spin liquid
triangular lattice

Access to Document

10.1088/2752-5724/ad4a93

Cite this

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title = "Synthesis, disorder and Ising anisotropy in a new spin liquid candidate PrMgAl11O19",

abstract = "Here we report the successful synthesis of large single crystals of triangular frustrated PrMgAl11O19 using the optical floating zone technique. Single crystal x-ray diffraction (XRD) measurements unveiled the presence of quenched disorder within the mirror plane, specifically \textasciitilde{}7\% of Pr ions deviating from the ideal 2d site towards the 6h site. Magnetic susceptibility measurements revealed an Ising anisotropy with the c-axis being the easy axis. Despite a large spin-spin interaction that develops below \textasciitilde{}10 K and considerable site disorder, the spins do not order or freeze down to at least 50 mK. The availability of large single crystals offers a distinct opportunity to investigate the exotic magnetic state on a triangular lattice with an easy axis out of the plane.",

keywords = "Ising anisotropy, disorder, frustration, spin liquid, triangular lattice",

author = "Yantao Cao and Huanpeng Bu and Zhendong Fu and Jinkui Zhao and Gardner, \{Jason S.\} and Zhongwen Ouyang and Zhaoming Tian and Zhiwei Li and Hanjie Guo",

note = "Publisher Copyright: {\textcopyright} 2024 The Author(s). Published by IOP Publishing Ltd on behalf of the Songshan Lake Materials Laboratory.",

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T1 - Synthesis, disorder and Ising anisotropy in a new spin liquid candidate PrMgAl11O19

AU - Cao, Yantao

AU - Bu, Huanpeng

AU - Fu, Zhendong

AU - Zhao, Jinkui

AU - Gardner, Jason S.

AU - Ouyang, Zhongwen

AU - Tian, Zhaoming

AU - Li, Zhiwei

AU - Guo, Hanjie

PY - 2024/9/1

Y1 - 2024/9/1

N2 - Here we report the successful synthesis of large single crystals of triangular frustrated PrMgAl11O19 using the optical floating zone technique. Single crystal x-ray diffraction (XRD) measurements unveiled the presence of quenched disorder within the mirror plane, specifically ~7% of Pr ions deviating from the ideal 2d site towards the 6h site. Magnetic susceptibility measurements revealed an Ising anisotropy with the c-axis being the easy axis. Despite a large spin-spin interaction that develops below ~10 K and considerable site disorder, the spins do not order or freeze down to at least 50 mK. The availability of large single crystals offers a distinct opportunity to investigate the exotic magnetic state on a triangular lattice with an easy axis out of the plane.

AB - Here we report the successful synthesis of large single crystals of triangular frustrated PrMgAl11O19 using the optical floating zone technique. Single crystal x-ray diffraction (XRD) measurements unveiled the presence of quenched disorder within the mirror plane, specifically ~7% of Pr ions deviating from the ideal 2d site towards the 6h site. Magnetic susceptibility measurements revealed an Ising anisotropy with the c-axis being the easy axis. Despite a large spin-spin interaction that develops below ~10 K and considerable site disorder, the spins do not order or freeze down to at least 50 mK. The availability of large single crystals offers a distinct opportunity to investigate the exotic magnetic state on a triangular lattice with an easy axis out of the plane.

KW - Ising anisotropy

KW - disorder

KW - frustration

KW - spin liquid

KW - triangular lattice

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