Temperature-dependent structural and magnetic properties of R2MMnO6 double perovskites (R=Dy, Gd; M=Ni, Co)
Journal article, 2018

The structural and magnetic properties of the Dy2CoMnO6, Dy2NiMnO6 and Gd2CoMnO6 double perovskites are investigated using X-ray powder diffraction and squid magnetometry. The materials adopt an orthorhombic structure (space ground Pnma) with disordered Co(Ni)/Mn cations, and exhibit ferrimagnetic transitions near T(C)85, 95, and 115K respectively. T-C was found to monotonously depend on the orthorhombic distortion (a-c)/(a+c) of the compounds. The crystal structure of the compounds was investigated as a function of temperature (16-1100K range), evidencing changes in the BO6 octahedron near T-C. The magnetic entropy changes are estimated for comparison of the magnetocaloric properties to those from literature.

Author

S. A. Ivanov

Uppsala University

Karpov Institute of Physical Chemistry

Mattias Andersson

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

J. Cedervall

Uppsala University

E. Lewin

Uppsala University

M. Sahlberg

Uppsala University

G. V. Bazuev

Russian Academy of Sciences

P. Nordblad

Uppsala University

R. Mathieu

Uppsala University

Journal of Materials Science: Materials in Electronics

0957-4522 (ISSN) 1573-482X (eISSN)

Vol. 29 21 18581-18592

Subject Categories

Inorganic Chemistry

Materials Chemistry

Condensed Matter Physics

DOI

10.1007/s10854-018-9976-1

More information

Latest update

3/4/2019 9