Journal
PHYSICAL REVIEW B
Volume 79, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.104425
Keywords
bond angles; crystal structure; exchange interactions (electron); magnetic structure; magnetoelastic effects; neutron diffraction; paramagnetic materials; vanadium compounds; X-ray diffraction
Funding
- Deutsche Forschungsgemeinschaft through Sonderforschungsbereich 608
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We present a combined neutron and synchrotron powder-diffraction study of the crystal and magnetic structures 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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