Magnetic and orbital ordering in the spinel MnV{sub 2}O{sub 4}.
Journal Article
·
· Phys. Rev. Lett.
Neutron inelastic scattering and diffraction techniques have been used to study the MnV{sub 2}O{sub 4} spinel system. Our measurements show the existence of two transitions to long-range ordered ferrimagnetic states, the first collinear and the second noncollinear. The lower temperature transition, characterized by development of antiferromagnetic components in the basal plane, is accompanied by a tetragonal distortion and the appearance of a gap in the magnetic excitation spectrum. The low-temperature noncollinear magnetic structure has been definitively resolved. Taken together, the crystal and magnetic structures indicate a staggered ordering of the V d orbitals. The anisotropy gap is a consequence of unquenched V orbital angular momentum.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; NIST; DOE
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 925378
- Report Number(s):
- ANL/IPNS/JA-60592
- Journal Information:
- Phys. Rev. Lett., Journal Name: Phys. Rev. Lett. Journal Issue: Feb. 15, 2008 Vol. 1; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- ENGLISH
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