Journal article

Interplay of structural chemistry and magnetism in perovskites; a study of CaLn2Ni2WO9; Ln = La, Pr, Nd

Abstract:: Polycrystalline samples of CaLn2Ni2WO9 (Ln = La, Pr, Nd) have been synthesized and characterised by a combination of X-ray and neutron diffraction, electron microscopy and magnetometry. Each composition adopts a perovskite-like structure with a ~5.50, b ~5.56, c ~7.78 Å, β ~90.1 ° in space group P21/n. Of the two crystallographically distinct six-coordinate sites, one is occupied entirely (Ln = Pr) or predominantly (Ln = La, Nd) by Ni2+ and the other by Ni2+ and W6+ in a ratio of approximately 1:2. None of the compounds shows long-range magnetic order at 5 K. The magnetometry data show that the magnetic moments of the Ni2+ cations form a spin glass below ~ 30 K in each case. The Pr3+ moments in CaPr2Ni2WO9 also freeze but the Nd3+ moments in CaNd2Ni2WO9 do not. This behaviour is contrasted with that observed in other (A,A’)B2B’O9 perovskites.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Chin, C., Paria Sena, R., Hunter, E., Hadermann, J., & Battle, P. (2017). Interplay of structural chemistry and magnetism in perovskites; a study of CaLn2Ni2WO9; Ln = La, Pr, Nd. Journal of Solid State Chemistry, 251, 224–232.

MLA Style

Chin, C., et al. “Interplay of Structural Chemistry and Magnetism In Perovskites; a Study of CaLn2Ni2WO9; Ln = La, Pr, Nd.” Journal of Solid State Chemistry, vol. 251, Elsevier, 2017, pp. 224–32.

Chicago Style

Chin, C, R Paria Sena, E Hunter, J Hadermann, and P Battle. 2017. “Interplay of Structural Chemistry and Magnetism In Perovskites; a Study of CaLn2Ni2WO9; Ln = La, Pr, Nd.” Journal of Solid State Chemistry 251: 224–32.
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Files:: Chin, CM, Paria Sena, R, Hunter, EC et al., (2017) Journal of ...

(Preview, Version of record, pdf, 1.1MB, Terms of use)

Publisher copy:: 10.1016/j.jssc.2017.04.023

Authors

+ Chin, C More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Chemistry
Sub department:: Inorganic Chemistry
Role:: Author

+ Paria Sena, R More by this author

Role:: Author

+ Hunter, E More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Chemistry
Sub department:: Inorganic Chemistry
Role:: Author

+ Hadermann, J More by this author

Role:: Author

+ Battle, P More by this author

Institution:: University of Oxford
Oxford college:: St Catherine's College
Role:: Author

+ Engineering and Physical Sciences Research Council More from this funder

Grant:: EP/M0189541

+ University of Oxford More from this funder

Funding agency for:: Chin, C

+ Croucher Foundation More from this funder

Funding agency for:: Chin, C

Publisher:: Elsevier
Journal:: Journal of Solid State Chemistry More from this journal
Volume:: 251
Pages:: 224–232
Publication date:: 2017-01-01
Acceptance date:: 2017-04-20
DOI:: 10.1016/j.jssc.2017.04.023
ISSN:: 0022-4596

Keywords:: magnetism

perovskite

diffraction
Pubs id:: pubs:691018
UUID:: uuid:ae1ab8cc-1215-4f91-b944-615a61e00123
Local pid:: pubs:691018
Source identifiers:: 691018
Deposit date:: 2017-04-24

Terms of use

Copyright holder:: Chin et al
Copyright date:: 2017
Notes:: Copyright © 2017 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).

Licence:: CC Attribution (CC BY)

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