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Magnetic Properties Of The Triangular Lattice Magnets A(4)b ' B2o12 (a=ba, Sr, La; B '=co, Ni, Mn; B=w, Re)

Title: Magnetic Properties Of The Triangular Lattice Magnets A(4)b ' B2o12 (a=ba, Sr, La; B '=co, Ni, Mn; B=w, Re).
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Name(s): Rawl, R., author
Lee, M., author
Choi, E. S., author
Li, G., author
Chen, K. W., author
Baumbach, R., author
dela Cruz, C. R., author
Ma, J., author
Zhou, H. D., author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2017-05-25
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: The geometrically frustrated two-dimensional triangular lattice magnets A(4)B'B2O12 (A=Ba, Sr, La; B'=Co, Ni, Mn; B=W, Re) have been studied by x-ray diffraction, ac and dc susceptibilities, powder neutron diffraction, and specific-heat measurements. The results reveal the following: (i) The samples containing Co2+ (effective spin-1/2) and Ni2+ (spin-1) ions with small spin numbers exhibit ferromagnetic (FM) behavior and ordering, respectively, while the sample containing Mn2+ (spin-5/2) ions with a large spin number exhibits antiferromagnetic (AFM) ordering. We ascribe these spin-number-manipulated ground states to the competition between the AFM B'-O-O-B' and FM B'-O-B-O-B' superexchange interactions. (ii) The chemical pressure introduced into the Co-containing samples through the replacement of different-size ions on the A site finely tunes the FM behavior temperature of the system. This effect is not simply governed by the lattice parameters and requires more precise structural measurements to elucidate.
Identifier: FSU_libsubv1_wos_000401998500003 (IID), 10.1103/PhysRevB.95.174438 (DOI)
Keywords: antiferromagnet, cationic vacancies, frustrated magnets, hexagonal perovskites, metal-oxides, neutron powder diffraction
Publication Note: The publisher's version of record is available at https://doi.org/10.1103/PhysRevB.95.174438
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000401998500003
Owner Institution: FSU
Is Part Of: Physical Review B.
2469-9950
Issue: iss. 17, vol. 95

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Rawl, R., Lee, M., Choi, E. S., Li, G., Chen, K. W., Baumbach, R., … Zhou, H. D. (2017). Magnetic Properties Of The Triangular Lattice Magnets A(4)b ' B2o12 (a=ba, Sr, La; B '=co, Ni, Mn; B=w, Re). Physical Review B. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000401998500003