Temperature-dependent structural and magnetic properties of R2MMnO6 double perovskites (R=Dy, Gd; M=Ni, Co)
Artikel i vetenskaplig tidskrift, 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.

Författare

S. A. Ivanov

Uppsala universitet

Karpov Institute of Physical Chemistry

Mattias Andersson

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

J. Cedervall

Uppsala universitet

E. Lewin

Uppsala universitet

M. Sahlberg

Uppsala universitet

G. V. Bazuev

Russian Academy of Sciences

P. Nordblad

Uppsala universitet

R. Mathieu

Uppsala universitet

Journal of Materials Science: Materials in Electronics

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

Vol. 29 21 18581-18592

Ämneskategorier

Oorganisk kemi

Materialkemi

Den kondenserade materiens fysik

DOI

10.1007/s10854-018-9976-1

Mer information

Senast uppdaterat

2019-03-04