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CATEGORY:
Solid State Seminar
TITLE:
Armchair-kagome and Pyrochlore Mn2Sb2O7
Speaker:
Daren Peets
Affiliation:
Department of Physics and the Advanced Materials Laboratory, Fudan University, Shanghai
WHEN:
Tuesday
07/11/2017, 14:30
WHERE:
Lidow, Nathan Rosen (300)
Organizer:
Amit Kanigel
Site:
-
Remarks:
-

Abstract

When prepared by standard high-temperature solid state synthesis, Mn2Sb2O7 forms in a unique chiral kagome-based structure, characterized by a novel Mn4 armchair motif intermediate between the triangles of a kagome plane and the tetrahedra of the pyrochlore structure. There are two magnetic ordering transitions at low temperature, one of which is multiferroic. The magnetic order is chiral. I will discuss our findings, and compare this material against its more-frustrated pyrochlore polymorph, which can be obtained through a low-temperature synthesis route.

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