High-pressure synthesis, crystal structures, and characterization of CdVO{sub 3-{delta}} and solid solutions CdVO{sub 3}-NaVO{sub 3}

Journal Article · Thu Jun 15 00:00:00 EDT 2006 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2006.02.018· OSTI ID:20905295

Belik, Alexei A ^[1]; Takayama-Muromachi, Eiji ^[2]

---

1. International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
2. Advanced Materials Laboratory (AML), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)

CdVO{sub 3-{delta}} and solid solutions of Cd{sub 1-x}Na{sub x}VO{sub 3} with the GdFeO{sub 3}-type perovskite structure were prepared using a high-pressure (6GPa) and high-temperature technique. No significant oxygen and cation deficiency was found in CdVO{sub 3}. Cd{sub 1-x}Na{sub x}VO{sub 3} are formed in the compositional range of 0=<x=<0.2. CdVO{sub 3} and Cd{sub 1-x}Na{sub x}VO{sub 3} demonstrate metallic conductivity and Pauli paramagnetism between 2 and 300K. A large electronic contribution to the specific heat ({gamma}=13.4 and 11.2mJ/(molK{sup 2}) for CdVO{sub 3} and Cd{sub 0.8}Na{sub 0.2}VO{sub 3}, respectively) was observed at low temperatures due to the strongly correlated electrons. Crystal structures of CdVO{sub 3} and Cd{sub 0.8}Na{sub 0.2}VO{sub 3} were refined by X-ray powder diffraction: space group Pnma; Z=4; a=5.33435(7)A, b=7.52320(9)A, and c=5.26394(6)A for CdVO{sub 3} and a=5.32056(9)A, b=7.50289(13)A, and c=5.25902(8)A for Cd{sub 0.8}Na{sub 0.2}VO{sub 3}.

• OSTI ID: 20905295
• Journal Information: Journal of Solid State Chemistry, Vol. 179, Issue 6; Other Information: DOI: 10.1016/j.jssc.2006.02.018; PII: S0022-4596(06)00115-0; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CADMIUM COMPOUNDS
ELECTRON CORRELATION
MAGNETIC SUSCEPTIBILITY
ORTHORHOMBIC LATTICES
PARAMAGNETISM
PEROVSKITE
PRESSURE RANGE MEGA PA 10-100
SODIUM COMPOUNDS
SOLID SOLUTIONS
SPACE GROUPS
SPECIFIC HEAT
SYNTHESIS
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
VANADATES
X-RAY DIFFRACTION