The first bulk synthesis of ReO3-type tungsten trioxide, WO3, from nanometric 
precursors

Crichton, W. A.; Bouvier, P.; Grzechnik, A.

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The first bulk synthesis of ReO₃-type tungsten trioxide, WO₃, from nanometric precursors

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Grzechnik, A.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Crichton, W. A., Bouvier, P., & Grzechnik, A. (2003). The first bulk synthesis of ReO₃-type tungsten trioxide, WO₃, from nanometric precursors. Materials Research Bulletin, 38(2), 289-296.

Cite as: https://hdl.handle.net/21.11116/0000-000E-F989-F

Abstract

A perovskite form Of WO3 has been synthesized in bulk for the
first time at 0.66 GPa and 973 K with a = 3.7823(4) Angstrom
[a(0) = 3.7719(4) Angstrom, at ambient conditions] from
nanometric powder Of WO3 with an average crystallite size of 35
nm. Data collected during tests to determine both the
likelihood of retaining the structure at room temperature and
the effect of high pressure on distortion have afforded
analysis of thermal expansivity and compressibility of this
phase. These result in V-T = 53.407(5)exp(-3.9(12) x 10(-6) (T
- 298) + 1.91(9) x 10(-8) (T-2 - 298(2))) Angstrom(3) and
equation of state parameters of V-0 = 53.67(4) Angstrom(3), K-0
= 41.8(19) GPa with partial derivativeK/partial derivative9P =
K' = 5.6(12). (C) 2002 Elsevier Science Ltd. All rights
reserved.