Intrinsic susceptibility and bond defects in the novel 2D frustrated antiferromagnet Ba\(_{2}\)Sn\(_{2}\)ZnCr\(_{7p}\)Ga\(_{10-7p}\)O\(_{22}\)

We present microscopic and macroscopic magnetic properties of the highly frustrated antiferromagnet Ba\(_{2}\)Sn\(_{2}\)ZnCr\(_{7p}\)Ga\(_{10-7p}\)O\(_{22}\), respectively probed with NMR and SQUID experiments. The \(T\)-variation of the intrinsic susceptibility of the Cr\(^{3+}\) frustrated kagom\&...

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Bibliographic Details
Published in:arXiv.org 2004-06
Main Authors: Bono, David, Mendels, Philippe, Gaston, Collin, Blanchard, Nicole
Format: Article
Language:English
Subjects:
Antiferromagnetism
Defects
Dilution
Lattice vacancies
Magnetic permeability
Magnetic properties
NMR
Nuclear magnetic resonance
Superconducting quantum interference devices
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Summary:We present microscopic and macroscopic magnetic properties of the highly frustrated antiferromagnet Ba\(_{2}\)Sn\(_{2}\)ZnCr\(_{7p}\)Ga\(_{10-7p}\)O\(_{22}\), respectively probed with NMR and SQUID experiments. The \(T\)-variation of the intrinsic susceptibility of the Cr\(^{3+}\) frustrated kagom\'{e} bilayer, \(\chi_{kag}\), displays a maximum around 45 K. The dilution of the magnetic lattice has been studied in detail for \(0.29 \leq p \leq0.97\). Novel dilution independent defects, likely related with magnetic bond disorder, are evidenced and discussed. We compare our results to SrCr\(_{9p}\)Ga\(_{12-9p}\)O\(_{19}\). Both bond defects and spin vacancies do not affect the average susceptibility of the kagom\'{e} bilayers.
ISSN:2331-8422
DOI:10.48550/arxiv.0402586