Strong Magneto-elastic coupling in VOCl: Neutron and synchrotron powder x-ray diffraction study

Details Strong Magneto-elastic coupling in VOCl: Neutron and synchrotron powder x-ray diffraction study Strong Magneto-elastic coupling in VOCl: Neutron and synchrotron powder x-ray diffraction study

2009-02-03

arxiv.org/abs/0902.0544v1

Phys. Rev. B 79, 104425 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevB.79.104425

We present a combined neutron and synchrotron powder diffraction study of the crystal and magnetic structure of VOCl. The occurrence of antiferromagnetic order in VOCl is accompanied by a monoclinic distortion. The high sensitivity of the magnetic interaction parameters on V-O-V bond angles and V-V distances yields strong magnetoelastic coupling which implies the structural distortion below T$_N$ as well as anomalous structural effects in the paramagnetic phase.

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