Revisiting Goodenough-Kanamori rules in a new series of double perovskites LaSr1-xCaxNiReO6
Journal article, 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.
Author
Somnath Jana
Indian Association for the Cultivation of Science
Helmholtz
Uppsala University
Payel Aich
Indian Association for the Cultivation of Science
P. Anil Kumar
Uppsala University
Seagate Technology Marlow Ltd
O. K. Forslund
Royal Institute of Technology (KTH)
E. Nocerino
Royal Institute of Technology (KTH)
V. Pomjakushin
Paul Scherrer Institut
M. Mansson
Royal Institute of Technology (KTH)
Yasmine Sassa
Chalmers, Physics, Materials Physics
Peter Svedlindh
Uppsala University
Olof Karis
Uppsala University
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 18296Subject Categories
Inorganic Chemistry
Materials Chemistry
Condensed Matter Physics
DOI
10.1038/s41598-019-54427-0
PubMed
31797876