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 18296

Subject Categories

Inorganic Chemistry

Materials Chemistry

Condensed Matter Physics

DOI

10.1038/s41598-019-54427-0

PubMed

31797876

More information

Latest update

5/26/2023