Equation of state of nanocrystalline BaTiO 3  up to 52 GPa at room temperature | Zendy

Kumar Ravhi S. | Zendy; Cornelius Andrew L. | Zendy; Nicol Malcolm F. | Zendy

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Equation of state of nanocrystalline BaTiO 3 up to 52 GPa at room temperature

Author(s) -

Kumar Ravhi S.,

Cornelius Andrew L.,

Nicol Malcolm F.

Publication year - 2007

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200672572

Subject(s) - nanocrystalline material , tetragonal crystal system , compressibility , phase transition , diffraction , materials science , synchrotron , grain size , diamond anvil cell , equation of state , phase (matter) , powder diffraction , particle size , crystallography , analytical chemistry (journal) , thermodynamics , mineralogy , condensed matter physics , chemistry , optics , nanotechnology , crystal structure , composite material , physics , organic chemistry , chromatography

We have performed in situ high pressure X‐ray powder diffraction experiments on nanocrystalline BaTiO 3 (average particle size 40 nm) up to 52 GPa using synchrotron X‐rays in the angle dispersive geometry with a diamond anvil cell. In order to understand the grain size effect on the tetragonal (P4mm) to cubic (Pm3m) phase transition and the compressibility, experiments were also carried out on bulkBaTiO 3 up to 36 GPa. The results show nanoBaTiO 3 is less compressible than the bulkBaTiO 3 and the phase transition pressure is found to be 1.9 GPa higher for nanoBaTiO 3 . (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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