Orbital glass state of the nearly metallic spinel cobalt vanadate
- Waseda Univ., Tokyo (Japan)
- Univ. of Virginia, Charlottesville, VA (United States)
- Helmholtz-Zentrum fur Materialien und Energie, Berlin (Germany)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sophia Univ., Tokyo (Japan)
Strain, magnetization, dielectric relaxation, and unpolarized and polarized neutron diffraction measurements were performed to study the magnetic and structural properties of spinel Co1–xV2+xO4. The strain measurement indicates that, upon cooling, ΔL/L in the order of ~10–4 starts increasing below TC, becomes maximum at Tmax, and then decreases and changes its sign at T*. Neutron measurements indicate that a collinear ferrimagnetic order develops below TC and upon further cooling noncollinear ferrimagnetic ordering occurs below Tmax. At low temperatures, the dielectric constant exhibits a frequency dependence, indicating slow dynamics. Lastly, these results indicate the existence of an orbital glassy state at low temperatures in this nearly metallic frustrated magnet.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC05-00OR22725; FG02-07ER46384
- OSTI ID:
- 1265995
- Alternate ID(s):
- OSTI ID: 1235611
- Journal Information:
- Physical Review Letters, Vol. 116, Issue 3; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Spin-Orbital Correlated Dynamics in the Spinel-Type Vanadium Oxide
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journal | July 2017 |
A variety of elastic anomalies in orbital-active nearly-itinerant cobalt vanadate spinel | text | January 2017 |
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