Magnetic Properties of the low dimensional spin system (VO)$_2$P$_2$O$_{7}$: ESR and susceptibility

A. V. Prokofiev; F. Büllesfeld; W. Assmus; H. Schwenk; D. Wichert; U. Löw; B. Lüthi

doi:10.1007/s100510050448

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Magnetic Properties of the low dimensional spin system (VO)$_2$P$_2$O$_{7}$: ESR and susceptibility

A. V. Prokofiev·F. Büllesfeld·W. Assmus·H. Schwenk·D. Wichert·U. Löw·B. Lüthi

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Abstract

Experimental results on magnetic resonance (ESR) and magnetic susceptibility are given for single crystalline (VO)$_2$P$_2$O$_{7}$. The crystal growth procedure is briefly discussed. The susceptibility is interpreted numerically using a model with alternating spin chains. We determine $J$=51 K and $δ$=0.2. Furthermore we find a spin gap of $\approx 6$meV from our ESR measurements. Using elastic constants no indication of a phase transition forcing the dimerization is seen below 300 K.

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A. V. Prokofiev, F. Büllesfeld, W. Assmus, H. Schwenk, D. Wichert, U. Löw, B. Lüthi. 1997-12-12. Magnetic Properties of the low dimensional spin system (VO)$_2$P$_2$O$_{7}$: ESR and susceptibility. https://doi.org/10.1007/s100510050448

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