Low-temperature and dynamic magnetism of highly frustrated 5d2Li4MgOsO6 polymorphs in comparison with 5d3Li3Mg2OsO6

Gia T. Tran; Phuong Hieu T. Nguyen; Charles J. Bloed; Michael E. Evans; Jamie A. Anczarski; William P. Martin; Jefferson Toro; Demetrios V. Papakostas; James Beare; Murray N. Wilson; John E. Greedan; Graeme M. Luke; Thomas Gredig; Jeremy P. Carlo; Shahab Derakhshan

doi:10.1103/PhysRevB.98.184401

Low-temperature and dynamic magnetism of highly frustrated 5d2Li4MgOsO6 polymorphs in comparison with 5d3Li3Mg2OsO6

Gia T. Tran, Phuong Hieu T. Nguyen, Charles J. Bloed, Michael E. Evans, Jamie A. Anczarski, William P. Martin, Jefferson Toro, Demetrios V. Papakostas, James Beare, Murray N. Wilson, John E. Greedan, Graeme M. Luke, Thomas Gredig, Jeremy P. Carlo, Shahab Derakhshan

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3 Scopus citations

Abstract

Geometric magnetic frustration has attracted substantial interest due to the exotic physics and rich phase diagrams revealed by the cancellation of normally dominant magnetic interactions, giving impetus for the search for novel frustrated systems, most often based on antiferromagnetic correlations between magnetic ions decorating triangular or tetrahedral lattices. We report here low-temperature magnetic susceptibility and muon spin relaxation results on Li4MgOsO6 and Li3Mg2OsO6, members of the A5BO6 rock-salt ordered family of frustrated materials. In Li3Mg2OsO6 we find spin freezing below 12 K. In Li4MgOsO6, which can crystallize into either orthorhombic Fddd or monoclinic C2/m crystal symmetries depending on synthesis conditions, we find magnetism consistent with glassylike behavior dominating below 2 K, with partial ordering and evidence for dynamics at somewhat higher temperatures.

Original language	English
Article number	184401
Journal	Physical Review B
Volume	98
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.98.184401
State	Published - Nov 1 2018
Externally published	Yes

Funding

S.D. is grateful for financial support from NSF-DMR-RUI Award No. 1601811. S.D. and T.G. also acknowledge support from W. M. Keck Foundation for establishment of the Keck Energy Materials Program at CSULB. J.P.C. acknowledges support from the Research Corporation for Science Advancement (Cottrell College Science Award No. 23314). We thank the TRIUMF CMMS for assistance with experiments.

Funders	Funder number
NSF-DMR-RUI	1601811
W. M. Keck Foundation
Research Corporation for Science Advancement	23314

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10.1103/PhysRevB.98.184401

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Tran, G. T., Nguyen, P. H. T., Bloed, C. J., Evans, M. E., Anczarski, J. A., Martin, W. P., Toro, J., Papakostas, D. V., Beare, J., Wilson, M. N., Greedan, J. E., Luke, G. M., Gredig, T., Carlo, J. P., & Derakhshan, S. (2018). Low-temperature and dynamic magnetism of highly frustrated 5d2Li4MgOsO6 polymorphs in comparison with 5d3Li3Mg2OsO6. Physical Review B, 98(18), Article 184401. https://doi.org/10.1103/PhysRevB.98.184401

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title = "Low-temperature and dynamic magnetism of highly frustrated 5d2Li4MgOsO6 polymorphs in comparison with 5d3Li3Mg2OsO6",

abstract = "Geometric magnetic frustration has attracted substantial interest due to the exotic physics and rich phase diagrams revealed by the cancellation of normally dominant magnetic interactions, giving impetus for the search for novel frustrated systems, most often based on antiferromagnetic correlations between magnetic ions decorating triangular or tetrahedral lattices. We report here low-temperature magnetic susceptibility and muon spin relaxation results on Li4MgOsO6 and Li3Mg2OsO6, members of the A5BO6 rock-salt ordered family of frustrated materials. In Li3Mg2OsO6 we find spin freezing below 12 K. In Li4MgOsO6, which can crystallize into either orthorhombic Fddd or monoclinic C2/m crystal symmetries depending on synthesis conditions, we find magnetism consistent with glassylike behavior dominating below 2 K, with partial ordering and evidence for dynamics at somewhat higher temperatures.",

author = "Tran, {Gia T.} and Nguyen, {Phuong Hieu T.} and Bloed, {Charles J.} and Evans, {Michael E.} and Anczarski, {Jamie A.} and Martin, {William P.} and Jefferson Toro and Papakostas, {Demetrios V.} and James Beare and Wilson, {Murray N.} and Greedan, {John E.} and Luke, {Graeme M.} and Thomas Gredig and Carlo, {Jeremy P.} and Shahab Derakhshan",

note = "Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

year = "2018",

month = nov,

day = "1",

doi = "10.1103/PhysRevB.98.184401",

language = "English",

volume = "98",

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Tran, GT, Nguyen, PHT, Bloed, CJ, Evans, ME, Anczarski, JA, Martin, WP, Toro, J, Papakostas, DV, Beare, J, Wilson, MN, Greedan, JE, Luke, GM, Gredig, T, Carlo, JP & Derakhshan, S 2018, 'Low-temperature and dynamic magnetism of highly frustrated 5d2Li4MgOsO6 polymorphs in comparison with 5d3Li3Mg2OsO6', Physical Review B, vol. 98, no. 18, 184401. https://doi.org/10.1103/PhysRevB.98.184401

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T1 - Low-temperature and dynamic magnetism of highly frustrated 5d2Li4MgOsO6 polymorphs in comparison with 5d3Li3Mg2OsO6

AU - Tran, Gia T.

AU - Nguyen, Phuong Hieu T.

AU - Bloed, Charles J.

AU - Evans, Michael E.

AU - Anczarski, Jamie A.

AU - Martin, William P.

AU - Toro, Jefferson

AU - Papakostas, Demetrios V.

AU - Beare, James

AU - Wilson, Murray N.

AU - Greedan, John E.

AU - Luke, Graeme M.

AU - Gredig, Thomas

AU - Carlo, Jeremy P.

AU - Derakhshan, Shahab

PY - 2018/11/1

Y1 - 2018/11/1

N2 - Geometric magnetic frustration has attracted substantial interest due to the exotic physics and rich phase diagrams revealed by the cancellation of normally dominant magnetic interactions, giving impetus for the search for novel frustrated systems, most often based on antiferromagnetic correlations between magnetic ions decorating triangular or tetrahedral lattices. We report here low-temperature magnetic susceptibility and muon spin relaxation results on Li4MgOsO6 and Li3Mg2OsO6, members of the A5BO6 rock-salt ordered family of frustrated materials. In Li3Mg2OsO6 we find spin freezing below 12 K. In Li4MgOsO6, which can crystallize into either orthorhombic Fddd or monoclinic C2/m crystal symmetries depending on synthesis conditions, we find magnetism consistent with glassylike behavior dominating below 2 K, with partial ordering and evidence for dynamics at somewhat higher temperatures.

AB - Geometric magnetic frustration has attracted substantial interest due to the exotic physics and rich phase diagrams revealed by the cancellation of normally dominant magnetic interactions, giving impetus for the search for novel frustrated systems, most often based on antiferromagnetic correlations between magnetic ions decorating triangular or tetrahedral lattices. We report here low-temperature magnetic susceptibility and muon spin relaxation results on Li4MgOsO6 and Li3Mg2OsO6, members of the A5BO6 rock-salt ordered family of frustrated materials. In Li3Mg2OsO6 we find spin freezing below 12 K. In Li4MgOsO6, which can crystallize into either orthorhombic Fddd or monoclinic C2/m crystal symmetries depending on synthesis conditions, we find magnetism consistent with glassylike behavior dominating below 2 K, with partial ordering and evidence for dynamics at somewhat higher temperatures.

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Low-temperature and dynamic magnetism of highly frustrated 5d2Li4MgOsO6 polymorphs in comparison with 5d3Li3Mg2OsO6

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