Abstract
SrSn2 Ga1.3 Cr2.7 O11 is shown to be a strongly geometrically frustrated magnet through measurement of its temperature-dependent magnetic susceptibility and specific heat. This material, determined by powder neutron diffraction to have an R -type ferrite crystal structure, has S=3/2 Cr3+ ions in isolated Kagomé planes with no magnetic ions in the intermediary structural layers. The Kagomé planes contain 10% nonmagnetic Ga3+. This structure type makes the chromate family of frustrated magnets unusual because it displays four spinel-based structural variants with the same basic magnetic lattice and different effective dimensionalities and degrees of frustration. A comparison of the structures and magnetic characteristics is presented.
Original language | English (US) |
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Article number | 134413 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 81 |
Issue number | 13 |
DOIs | |
State | Published - Apr 8 2010 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics