Revisiting Goodenough-Kanamori rules in a new series of double perovskites LaSr1-xCaxNiReO6
Artikel i vetenskaplig tidskrift, 2019
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.
Författare
Somnath Jana
Indian Association for the Cultivation of Science
Helmholtz
Uppsala universitet
Payel Aich
Indian Association for the Cultivation of Science
P. Anil Kumar
Uppsala universitet
Seagate Technology Marlow Ltd
O. K. Forslund
Kungliga Tekniska Högskolan (KTH)
E. Nocerino
Kungliga Tekniska Högskolan (KTH)
V. Pomjakushin
Paul Scherrer Institut
M. Mansson
Kungliga Tekniska Högskolan (KTH)
Yasmine Sassa
Chalmers, Fysik, Materialfysik
Peter Svedlindh
Uppsala universitet
Olof Karis
Uppsala universitet
Vasudeva Siruguri
Bhabha Atomic Research Centre (BARC)
Sugata Ray
Indian Association for the Cultivation of Science
Scientific Reports
2045-2322 (ISSN) 20452322 (eISSN)
Vol. 9 1 18296Ämneskategorier (SSIF 2011)
Oorganisk kemi
Materialkemi
Den kondenserade materiens fysik
DOI
10.1038/s41598-019-54427-0
PubMed
31797876