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Revisiting Goodenough-Kanamori rules in a new series of double perovskites LaSr1-xCaxNiReO6
Indian Assoc Cultivat Sci, Ctr Adv Mat, Kolkata 700032, India.;Uppsala Univ, Dept Phys & Astron, S-75236 Uppsala, Sweden.;Helmholtz Zentrum Berlin Mat & Energie, Inst Methods & Instrumentat Synchrotron Radiat Re, Albert Einstein Str 15, D-12489 Berlin, Germany..
Indian Assoc Cultivat Sci, Sch Mat Sci, Kolkata, India..ORCID iD: 0000-0003-3277-0096
Uppsala Univ, Dept Engn Sci, S-75236 Uppsala, Sweden.;Seagate Technol, 1 Disc Dr, Springtown BT48 0BF, North Ireland..
KTH, School of Engineering Sciences (SCI), Applied Physics, Materials and Nanophysics.
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2019 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 9, article id 18296Article in journal (Refereed) Published
Abstract [en]

The magnetic ground states in highly ordered double perovskites LaSr1-xCaxNiReO6 (x = 0.0, 0.5, 1.0) are studied in view of the Goodenough-Kanamori rules of superexchange interactions in this paper. In LaSrNiReO6, Ni and Re sublattices are found to exhibit curious magnetic states separately, but no long range magnetic ordering is achieved. The magnetic transition at similar to 255 K is identified with the independent Re sublattice magnetic ordering. Interestingly, the sublattice interactions are tuned by modifying the Ni-O-Re bond angles through Ca doping. Upon Ca doping, the Ni and Re sublattices start to display a ferrimagnetically ordered state at low temperature. The neutron powder diffraction data reveals long range ferrimagnetic ordering of the Ni and Re magnetic sublattices along the crystallographic b-axis. The transition temperature of the ferrimagnetic phase increases monotonically with increasing Ca concentration.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP , 2019. Vol. 9, article id 18296
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Physical Sciences
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URN: urn:nbn:se:kth:diva-266272DOI: 10.1038/s41598-019-54427-0ISI: 000501437300001PubMedID: 31797876Scopus ID: 2-s2.0-85076044540OAI: oai:DiVA.org:kth-266272DiVA, id: diva2:1383653
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QC 20200108

Available from: 2020-01-08 Created: 2020-01-08 Last updated: 2020-01-08Bibliographically approved

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Forslund, Ola KenjiNocerino, ElisabettaMånsson, Martin

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