منابع مشابه
POINT DEFECT INTERACTIONS IN CaF2 : GdF3
The reorientation of the point-defect pailformed in CaFz crystals by substitutional Gd-lt and interstitial F ions has been studied using EPR lifetime broadening measurements and dielectric and anelastic relaxation studies at temperatures between liquid N2 and room. The GdF3 concentration ranged from 0.01 to 0.3 mole percent. The crystals were annealed in an atmosphere of He and H F at temperatu...
متن کاملCOMPUTATIONAL ENUMERATION OF POINT DEFECT CLUSTERS IN DOUBLE- LATTICE CRYSTALS
The cluster representation matrices have already been successfully used to enumerate close-packed vacancy clusters in all single-lattice crystals [I, 2]. Point defect clusters in double-lattice crystals may have identical geometry but are distinct due to unique atomic postions enclosing them. The method of representation matrices is extended to make it applicable to represent and enumerate ...
متن کاملPoint defect interactions and structural stability of compounds
Theoretical studies of point defect interactions and structural stability of compounds have been performed using density functional theory. The defect-related properties, such as activation energy of diffusion, electronic and magnetic structure of selected materials have been studied. The major part of the present work is devoted to a very important material for semiconductor industry, GaAs. Th...
متن کاملExperimental and first-principles study of point defects, domain walls, and point-defect/domain-wall interactions in ferroelectric oxides
Ferroelectric oxides, such as lead zirconate titanate, have proved invaluable due to their excellent dielectric and piezoelectric properties. These classes of materials possess a large electric polarization below the Curie temperature. Regions of the crystal lattice having different directions of polarization are separated by nano-scale interfaces known as domainwalls. These interfaces, which c...
متن کاملPOINT DEFECT - DISLOCATION INTERACTION IN MgO
Amsl i tude Dependent Internal Friction has been measured from 77 K to 593 K in FlgO single crystals p las t ica l ly deformed a t room tenperature . Experiiioental resul ts have been tested w i t h several theoretical nodels of dislocation breakaway. A re1 iable value of interaction energy (0.5 eV) i s deduced fro111 the aodel of Teutonico, Granato and LGcke, b u t only a part ial agreement be...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1973
ISSN: 0449-1947
DOI: 10.1051/jphyscol:1973934