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Muon-spin relaxation and AC magnetometry study of the ferrimagnet LaSr2Cr2SbO9

Abstract:
AC susceptibility and muon spin relaxation data have been collected from a polycrystalline sample of LaSr2Cr2SbO9, a perovskite-like compound wherein the unequal distribution of Cr3+ and Sb5+ cations over two crystallographically-distinct six-coordinate B sites results in the onset of ferrimagnetism at ∼150 K. The data are used to elucidate the dynamics of the ferrimagnetic domain walls, thought to lie in Sb-rich regions, and suggest an energy barrier of ∼0.13 eV to their motion. The muon data confirm that the ferrimagnetic order is a true bulk phenomenon. The behaviour of this material is briefly compared to that of Ni2+- based relaxor ferromagnets.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.jssc.2019.120935

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Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Inorganic Chemistry
Oxford college:
St Catherine's College
Role:
Author
ORCID:
0000-0003-0955-7676


Publisher:
Elsevier
Journal:
Journal of Solid State Chemistry More from this journal
Volume:
279
Article number:
120935
Publication date:
2019-09-04
Acceptance date:
2019-09-03
DOI:
ISSN:
0022-4596


Keywords:
Pubs id:
pubs:1050062
UUID:
uuid:d133085f-b93d-4ada-ada6-356cc0513163
Local pid:
pubs:1050062
Source identifiers:
1050062
Deposit date:
2019-09-06

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