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Title: Anisotropic magnetic properties of the triangular plane lattice material TmMgGaO 4

Here, the crystal growth, structure, and basic magnetic properties of TmMgGaO 4 are reported. The Tm ions are located in a planar triangular lattice consisting of distorted TmO6 octahedra, while the Mg and Ga atoms randomly occupy intermediary bilayers of M-O triangular bipyramids. The Tm ions are positionally disordered. The material displays an antiferromagnetic Curie Weiss theta of ~ -20 -25 K, with no clear ordering visible in the magnetic susceptibility down to 1.8 K; the structure and magnetic properties suggest that ordering of the magnetic moments is frustrated by both structural disorder and the triangular magnetic motif. Single crystal magnetization measurements indicate that the magnetic properties are highly anisotropic, with large moments measured perpendicular to the triangular planes. At 2 K, a broad step-like feature is seen in the field-dependent magnetization perpendicular to the plane on applied field near 2 Tesla.
Authors:
 [1] ;  [1] ;  [1] ;  [1]
  1. Princeton Univ., Princeton, NJ (United States)
Publication Date:
Grant/Contract Number:
FG02-08ER46544
Type:
Accepted Manuscript
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 105; Journal Issue: C; Journal ID: ISSN 0025-5408
Publisher:
Elsevier
Research Org:
Princeton Univ., NJ (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; A. Magnetic materials; A. Layered compounds; A. Oxides
OSTI Identifier:
1441198

Cevallos, F. Alex, Stolze, Karoline, Kong, Tai, and Cava, R. J.. Anisotropic magnetic properties of the triangular plane lattice material TmMgGaO4. United States: N. p., Web. doi:10.1016/j.materresbull.2018.04.042.
Cevallos, F. Alex, Stolze, Karoline, Kong, Tai, & Cava, R. J.. Anisotropic magnetic properties of the triangular plane lattice material TmMgGaO4. United States. doi:10.1016/j.materresbull.2018.04.042.
Cevallos, F. Alex, Stolze, Karoline, Kong, Tai, and Cava, R. J.. 2018. "Anisotropic magnetic properties of the triangular plane lattice material TmMgGaO4". United States. doi:10.1016/j.materresbull.2018.04.042.
@article{osti_1441198,
title = {Anisotropic magnetic properties of the triangular plane lattice material TmMgGaO4},
author = {Cevallos, F. Alex and Stolze, Karoline and Kong, Tai and Cava, R. J.},
abstractNote = {Here, the crystal growth, structure, and basic magnetic properties of TmMgGaO4 are reported. The Tm ions are located in a planar triangular lattice consisting of distorted TmO6 octahedra, while the Mg and Ga atoms randomly occupy intermediary bilayers of M-O triangular bipyramids. The Tm ions are positionally disordered. The material displays an antiferromagnetic Curie Weiss theta of ~ -20 -25 K, with no clear ordering visible in the magnetic susceptibility down to 1.8 K; the structure and magnetic properties suggest that ordering of the magnetic moments is frustrated by both structural disorder and the triangular magnetic motif. Single crystal magnetization measurements indicate that the magnetic properties are highly anisotropic, with large moments measured perpendicular to the triangular planes. At 2 K, a broad step-like feature is seen in the field-dependent magnetization perpendicular to the plane on applied field near 2 Tesla.},
doi = {10.1016/j.materresbull.2018.04.042},
journal = {Materials Research Bulletin},
number = C,
volume = 105,
place = {United States},
year = {2018},
month = {4}
}