Investigation of the crystal chemical and ferroelectric properties in the vicinity of LiNbO/sub 3/ and LiTaO/sub 3/ inside the ternary systems Li/sub 2/O-Nb/sub 2/O/sub 5/-(TiO/sub 2/)/sub 2/ and Li/sub 2/O-Ta/sub 2/O/sup 5/-(SnO/sub 2/)/sub 2/

Journal Article · Fri Aug 01 00:00:00 EDT 1986 · J. Solid State Chem.; (United States)

DOI:https://doi.org/10.1016/0022-4596(86)90118-0· OSTI ID:5163262

Elouadi, B; Zriouil, M

A crystal chemical study has been carried out for the ternary systems Li/sub 2/O-M/sub 2/O/sub 5/-(M'O/sub 2/)/sub 2/ (M = Nb, M' = Ti; M = Ta, M' = Sn), in order to characterize and delimit the extension of domains of solid solutions in the vicinity of LiNbO/sub 3/ and LiTaO/sub 3/. The nature of the nonstoichiometry within these regions of solid solution has been found to be of a cationic excess or deficit. No evidence for anionic deficit has been found in this study. The ferroelectric Curie temperature T/sub C/ decreases as the composition deviates from LiNbO/sub 3/ or LiTaO/sub 3/. The decline in T/sub C/ has been interpreted on the basis of the electrostatic interactions resulting from either cationic excess or deficit.

• Research Organization: Applied Solid State Chemistry Lab., Charia Ibn Batota Rabat, Morocco
• OSTI ID: 5163262
• Journal Information: J. Solid State Chem.; (United States), Vol. 64:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
LITHIUM OXIDES
FERROMAGNETISM
STOICHIOMETRY
NIOBIUM OXIDES
TANTALUM OXIDES
TIN OXIDES
TITANIUM OXIDES
CATIONS
CRYSTAL STRUCTURE
CURIE POINT
EXPERIMENTAL DATA
FERROELECTRIC MATERIALS
TERNARY ALLOY SYSTEMS
ALKALI METAL COMPOUNDS
ALLOY SYSTEMS
CHALCOGENIDES
CHARGED PARTICLES
DATA
INFORMATION
IONS
LITHIUM COMPOUNDS
MAGNETISM
NIOBIUM COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
TANTALUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TIN COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
400201 - Chemical & Physicochemical Properties