Intermediate ferroelectric orthorhombic and monoclinic M{sub B} phases in [110] electric-field-cooled Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}-30%PbTiO{sub 3} crystals
- Department of Materials Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061 (United States)
Structural phase transformations of [110] electric-field-cooled Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}-30%PbTiO{sub 3} (PMN-30%PT) crystals have been performed by x-ray diffraction. A phase sequence of cubic (C){yields} tetragonal (T){yields} orthorhombic (O){yields} monoclinic (M{sub B}) was found on field cooling (FC); and a rhombohedral (R){yields}M{sub B}{yields}O sequence was observed with increasing field, beginning from the zero-field-cooled condition at room temperature. The application of the [110] electric field induced a dramatic change in the phase sequence in the FC condition, compared to the corresponding data for PMN-30%PT crystals in a [001] field, which shows that the phase sequence in the FC condition is altered by the crystallographic direction along which a modest electric field (E) is applied. Only when E is applied along [110] are intermediate O and M{sub B} phases observed.
- OSTI ID:
- 20719306
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 72, Issue 6; Other Information: DOI: 10.1103/PhysRevB.72.064104; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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