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Li Y, Phelan D, Ye F, Zheng H, Krivyakina E, Samarakoon A, LaBarre PG, Neu J, Siegrist T, Rosenkranz S, Syzranov SV, Ramirez AP. Evolution of magnetic surfboards and spin glass behavior in (Fe 1-pGa p) 2TiO 5. J Phys Condens Matter 2023; 35:475401. [PMID: 37557895 DOI: 10.1088/1361-648x/aceede] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 08/09/2023] [Indexed: 08/11/2023]
Abstract
The unusual anisotropy of the spin glass (SG) transition in the pseudobrookite system Fe2TiO5has 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 Fe2TiO5diluted with non-magnetic Ga, (Fe1-pGap)2TiO5, for disorder parameterp= 0, 0.11, and 0.42, and elastic neutron scattering data forp= 0.20. A uniform suppression ofTgis observed upon increasingp, along with a value ofχTgthat increases asTgdecreases, i.e.dχ(Tg)/dTg<0We also observeCT∝T2in the low temperature limit. The observed behavior places (Fe1-pGap)2TiO5in the category of a strongly geometrically frustrated SG.
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Affiliation(s)
- Y Li
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - D Phelan
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - F Ye
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States of America
| | - H Zheng
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - E Krivyakina
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
- Department of Physics, Northern Illinois University, DeKalb, IL 60115, United States of America
| | - A Samarakoon
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - P G LaBarre
- Physics Department, University of California Santa Cruz, Santa Cruz, CA 95064, United States of America
| | - J Neu
- National High Magnetic Field Laboratory, Tallahassee, FL 32310, United States of America
- Nuclear Nonproliferation Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America
| | - T Siegrist
- National High Magnetic Field Laboratory, Tallahassee, FL 32310, United States of America
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL 32310, United States of America
| | - S Rosenkranz
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - S V Syzranov
- Physics Department, University of California Santa Cruz, Santa Cruz, CA 95064, United States of America
| | - A P Ramirez
- Physics Department, University of California Santa Cruz, Santa Cruz, CA 95064, United States of America
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