Magnetic Phase Transition in V2O3 Nanocrystals

Journal Article · Thu Sep 30 00:00:00 EDT 2010 · Physical Review. B, Condensed Matter and Materials Physics

OSTI ID:1000447

Billinge, S; Blagojevic, V A; Carlo, J P; Brus, L E; Steigerwald, M L; Uemura, Y J; Billinge, S J.L.; Zhou, W; Stephens, P W; Aczel, A A; Luke, G M

V{sub 2}O{sub 3} nanocrystals can be synthesized through hydrothermal reduction in VO(OH){sub 2} using hydrazine as a reducing agent. Addition of different ligands to the reaction produces nanoparticles, nanorods, and nanoplatelets of different sizes. Small nanoparticles synthesized in this manner show suppression of the magnetic phase transition to lower temperatures. Using muon spin relaxation spectroscopy and synchrotron x-ray diffraction, we have determined that the volume fraction of the high-temperature phase, characterized by a rhombohedral structure and paramagnetism, gradually declines with decreasing temperature, in contrast to the sharp transition observed in bulk V{sub 2}O{sub 3}.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: DOE - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1000447
• Report Number(s): BNL-94356-2010-JA; R&D Project: PO-011; KC0202010; TRN: US1100123
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 82, Issue 9; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HYDRAZINE
MUON SPIN RELAXATION
PARAMAGNETISM
REDUCING AGENTS
SPECTROSCOPY
SYNCHROTRONS
X-RAY DIFFRACTION