High-Pressure Synthesis and Ferrimagnetism of Ni3TeO6‑Type Mn2ScMO6 (M = Nb, Ta)

The corundum-related oxides Mn2ScNbO6 and Mn2ScTaO6 were synthesized at high pressure and high temperature (6 GPa and 1475 K). Analysis of the synchrotron powder X-ray diffraction shows that Mn2ScNbO6 and Mn2ScTaO6 crystallize in Ni3TeO6-type noncentrosymmetric crystal structures with space group R3...

Full description

Saved in:
Bibliographic Details
Published in:Inorganic chemistry 2019-12, Vol.58 (23), p.15953-15961
Main Authors: Feng, Hai L, Deng, Zheng, Croft, Mark, Lapidus, Saul H, Zu, Rui, Gopalan, Venkatraman, Grams, Christoph P, Hemberger, Joachim, Liu, Sizhan, Tyson, Trevor A, Frank, Corey E, Jin, Changqing, Walker, David, Greenblatt, Martha
Format: Article
Language:English
Subjects:
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The corundum-related oxides Mn2ScNbO6 and Mn2ScTaO6 were synthesized at high pressure and high temperature (6 GPa and 1475 K). Analysis of the synchrotron powder X-ray diffraction shows that Mn2ScNbO6 and Mn2ScTaO6 crystallize in Ni3TeO6-type noncentrosymmetric crystal structures with space group R3. The asymmetric crystal structure was confirmed by second harmonic generation measurement. X-ray absorption near-edge spectroscopies indicate formal valence states of Mn2+ 2Sc3+Nb5+O6 and Mn2+ 2Sc3+Ta5+O6, also supported by the calculated bond valence sums. Both samples are electrically insulating. Magnetic measurements indicate that Mn2ScNbO6 and Mn2ScTaO6 order ferrimagnetically at 53 and 50 K, respectively, and Mn2ScTaO6 is found to have a field-induced magnetic transition.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.9b02468