Ordering in Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-Pb(Mg/sub 1/2/W/sub 1/2/)O/sub 3/ solid solutions

Journal Article · Sat Nov 15 00:00:00 EST 1980 · J. Solid State Chem.; (United States)

DOI:https://doi.org/10.1016/0022-4596(80)90502-2· OSTI ID:6645157

Amin, A ^[1]; Newnham, R E; Cross, L E; Nomura, S; Cox, D E

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1. Pennsylvania State Univ., University Park

Compositional ordering was found to occur in the ferroelectric (1 - x)Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-antiferroelectric x Pb(Mg/sub 1/2/W/sub 1/2/)O/sub 3/ solid solution system. X-ray diffraction and neutron profile fitting structure refinement were used to refine one such composition with x = 0.9. The paraelectric structure of compositions with x < 0.2 is that of the disordered perovskite (space group Pm3m), whereas for 0.2 less than or equal to x < 1.0 the structure is that of ordered perovskite (space group Fm3m). The oxygen octahedra in the ordered state are regular but no longer equivalent.

• OSTI ID: 6645157
• Journal Information: J. Solid State Chem.; (United States), Vol. 35:2
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
LEAD OXIDES
SOLID SOLUTIONS
STRUCTURAL CHEMICAL ANALYSIS
MAGNESIUM OXIDES
NIOBIUM OXIDES
TUNGSTEN OXIDES
ANTIFERROELECTRIC MATERIALS
BOND LENGTHS
EXPERIMENTAL DATA
FERROELECTRIC MATERIALS
LATTICE PARAMETERS
NEUTRON DIFFRACTION
ORDER PARAMETERS
PEROVSKITE
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
DATA
DIELECTRIC MATERIALS
DIFFRACTION
DIMENSIONS
DISPERSIONS
INFORMATION
LEAD COMPOUNDS
LENGTH
MAGNESIUM COMPOUNDS
MATERIALS
MINERALS
MIXTURES
NIOBIUM COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
SCATTERING
SOLUTIONS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
400201* - Chemical &amp; Physicochemical Properties