Geometric magnetic frustration in Ba2Sn2Ga3ZnCr7O22: A two-dimensional spinel based Kagome lattice

Authors
Hagemann, IS Huang, Q Gao, XPA Ramirez, AP Cava, RJ
Citation
Is. Hagemann et al., Geometric magnetic frustration in Ba2Sn2Ga3ZnCr7O22: A two-dimensional spinel based Kagome lattice, PHYS REV L, 86(5), 2001, pp. 894-897
Citations number
11
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
5
Year of publication
2001
Pages
894 - 897
Database
ISI
SICI code
0031-9007(20010129)86:5<894:GMFIBA>2.0.ZU;2-I
Abstract
The properties of a two-dimensional geometrically frustrated magnetic mater ial based on the Kagome net, Ba2Sn2ZnGa3Cr7O22, are reported. The Kagome ne t is fully filled with magnetic ions. A Curie Weiss theta theta (W) = -312 K is found with a spin glass transition at approximately 1.5 K, indicating strong geometrical magnetic frustration. This compound is the most two dime nsional of a structural series with the geometrically frustrated materials ZnCr2O4 and SrCr8Ga4O19. The comparison of their properties tests the influ ence of different degrees of coupling between Kagome layers on magnetic fru stration within a single chemical and structural family.