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Structure and magnetic interactions in the solid solution Ba3−xSrxCr2O8


Grundmann, Henrik; Schilling, Andreas; Marjerrison, Casey A; Dabkowska, Hanna A; Gaulin, Bruce D (2013). Structure and magnetic interactions in the solid solution Ba3−xSrxCr2O8. Materials Research Bulletin, 48(9):3108-3111.

Abstract

Solid solutions of the magnetic insulators Ba3Cr2O8 and Sr3Cr2O8 (Ba3−xSrxCr2O8) have been prepared in polycrystalline form for the first time. Single crystalline material was obtained using a mirror image floating zone technique. X-ray diffraction data taken at room temperature indicate that the space group of Ba3−xSrxCr2O8 remains unchanged for all values of x, while the cell parameters depend on the chemical composition, as expected. Magnetization data, measured from 300 K down to 2 K, suggest that the interaction constant Jd within the Cr5+ dimers varies in a peculiar way as a function of x, starting at Jd = 25 K for x = 0, then first slightly dropping to Jd = 18 K for x ≈ 0.75, before reaching Jd = 62 K for x = 3.

Abstract

Solid solutions of the magnetic insulators Ba3Cr2O8 and Sr3Cr2O8 (Ba3−xSrxCr2O8) have been prepared in polycrystalline form for the first time. Single crystalline material was obtained using a mirror image floating zone technique. X-ray diffraction data taken at room temperature indicate that the space group of Ba3−xSrxCr2O8 remains unchanged for all values of x, while the cell parameters depend on the chemical composition, as expected. Magnetization data, measured from 300 K down to 2 K, suggest that the interaction constant Jd within the Cr5+ dimers varies in a peculiar way as a function of x, starting at Jd = 25 K for x = 0, then first slightly dropping to Jd = 18 K for x ≈ 0.75, before reaching Jd = 62 K for x = 3.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2013
Deposited On:18 Feb 2014 15:31
Last Modified:05 Apr 2016 17:37
Publisher:Pergamon
ISSN:0025-5408
Publisher DOI:https://doi.org/10.1016/j.materresbull.2013.04.080

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