Evolution of magnetic surfboards and spin glass behavior in (Fe1−p Ga p )2TiO5

Y. Li; D. Phelan; F. Ye; H. Zheng; E. Krivyakina; A. Samarakoon; P. G. LaBarre; J. Neu; T. Siegrist; S. Rosenkranz; S. V. Syzranov; A. P. Ramirez

doi:10.1088/1361-648X/aceede

Evolution of magnetic surfboards and spin glass behavior in (Fe_1−pGa _p )₂TiO₅

Y. Li, D. Phelan, F. Ye, H. Zheng, E. Krivyakina, A. Samarakoon, P. G. LaBarre, J. Neu, T. Siegrist, S. Rosenkranz, S. V. Syzranov, A. P. Ramirez

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

Abstract

The unusual anisotropy of the spin glass (SG) transition in the pseudobrookite system Fe₂TiO₅ has been interpreted as arising from an induced, van der Waals-like, interaction among magnetic clusters. Here we present susceptibility ( χ ) and specific heat data ( C ) for Fe₂TiO₅ diluted with non-magnetic Ga, (Fe_1−pGa _p )₂TiO₅, for disorder parameter p = 0, 0.11, and 0.42, and elastic neutron scattering data for p = 0.20. A uniform suppression of T g is observed upon increasing p , along with a value of χ T g that increases as T g decreases, i.e. d χ ( T g ) / d T g < 0 We also observe C T ∝ T 2 in the low temperature limit. The observed behavior places (Fe_1−pGa _p )₂TiO₅ in the category of a strongly geometrically frustrated SG.

Original language	English
Article number	475401
Journal	Journal of Physics Condensed Matter
Volume	35
Issue number	47
DOIs	https://doi.org/10.1088/1361-648X/aceede
State	Published - Nov 27 2023

Funding

We thank A Henderson for assistance on materials related to but not included in this study. Work at UCSC (P L, A R) was supported by the U.S. Department of Energy Grant DE-SC0017862. Work at Argonne National Laboratory (Y L, D P, H Z, E K, A S, S R) included crystal growth; neutron scattering measurements, analysis, and interpretation; and high temperature susceptibility and was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division. A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by Oak Ridge National Laboratory. The work at FSU (J N and T S) was supported by the National Science Foundation Grant NSF DMR-1606952. Part of the work was carried out at the National High Magnetic Field Laboratory, which is supported by the National Science Foundation under Grant NSF DMR-1644779, and the State of Florida.

Funders	Funder number
National Science Foundation	NSF DMR-1606952, NSF DMR-1644779
U.S. Department of Energy	DE-SC0017862
Office of Science
Basic Energy Sciences
Argonne National Laboratory
Oak Ridge National Laboratory
Florida State University
Division of Materials Sciences and Engineering
State of Florida

Keywords

anisotropic spin glasses
geometric frustration
neutron scattering

Access to Document

10.1088/1361-648X/aceede

Cite this

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title = "Evolution of magnetic surfboards and spin glass behavior in (Fe1−p Ga p )2TiO5",

abstract = "The unusual anisotropy of the spin glass (SG) transition in the pseudobrookite system Fe2TiO5 has been interpreted as arising from an induced, van der Waals-like, interaction among magnetic clusters. Here we present susceptibility ( χ ) and specific heat data ( C ) for Fe2TiO5 diluted with non-magnetic Ga, (Fe1−p Ga p )2TiO5, for disorder parameter p = 0, 0.11, and 0.42, and elastic neutron scattering data for p = 0.20. A uniform suppression of T g is observed upon increasing p , along with a value of χ T g that increases as T g decreases, i.e. d χ ( T g ) / d T g < 0 We also observe C T ∝ T 2 in the low temperature limit. The observed behavior places (Fe1−p Ga p )2TiO5 in the category of a strongly geometrically frustrated SG.",

keywords = "anisotropic spin glasses, geometric frustration, neutron scattering",

author = "Y. Li and D. Phelan and F. Ye and H. Zheng and E. Krivyakina and A. Samarakoon and LaBarre, {P. G.} and J. Neu and T. Siegrist and S. Rosenkranz and Syzranov, {S. V.} and Ramirez, {A. P.}",

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language = "English",

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T1 - Evolution of magnetic surfboards and spin glass behavior in (Fe1−p Ga p )2TiO5

AU - Li, Y.

AU - Phelan, D.

AU - Ye, F.

AU - Zheng, H.

AU - Krivyakina, E.

AU - Samarakoon, A.

AU - LaBarre, P. G.

AU - Neu, J.

AU - Siegrist, T.

AU - Rosenkranz, S.

AU - Syzranov, S. V.

AU - Ramirez, A. P.

PY - 2023/11/27

Y1 - 2023/11/27

N2 - The unusual anisotropy of the spin glass (SG) transition in the pseudobrookite system Fe2TiO5 has been interpreted as arising from an induced, van der Waals-like, interaction among magnetic clusters. Here we present susceptibility ( χ ) and specific heat data ( C ) for Fe2TiO5 diluted with non-magnetic Ga, (Fe1−p Ga p )2TiO5, for disorder parameter p = 0, 0.11, and 0.42, and elastic neutron scattering data for p = 0.20. A uniform suppression of T g is observed upon increasing p , along with a value of χ T g that increases as T g decreases, i.e. d χ ( T g ) / d T g < 0 We also observe C T ∝ T 2 in the low temperature limit. The observed behavior places (Fe1−p Ga p )2TiO5 in the category of a strongly geometrically frustrated SG.

AB - The unusual anisotropy of the spin glass (SG) transition in the pseudobrookite system Fe2TiO5 has been interpreted as arising from an induced, van der Waals-like, interaction among magnetic clusters. Here we present susceptibility ( χ ) and specific heat data ( C ) for Fe2TiO5 diluted with non-magnetic Ga, (Fe1−p Ga p )2TiO5, for disorder parameter p = 0, 0.11, and 0.42, and elastic neutron scattering data for p = 0.20. A uniform suppression of T g is observed upon increasing p , along with a value of χ T g that increases as T g decreases, i.e. d χ ( T g ) / d T g < 0 We also observe C T ∝ T 2 in the low temperature limit. The observed behavior places (Fe1−p Ga p )2TiO5 in the category of a strongly geometrically frustrated SG.

KW - anisotropic spin glasses

KW - geometric frustration

KW - neutron scattering

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