Published December 1, 2004 | Version v1
Journal article Metadata-only

Molecular volume and electronic and vibrational polarizibilities for amorphous LaAlO3

Creators

  • 1. Air Force Research Laboratory-Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117 (United States)
  • 2. Air Force Research Laboratory-Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117 and Laboratoire d'Electrostatique et des Materiaux Dielectriques, CNRS, BP 166X, 38042 Grenoble Cedex (France)

Description

Grazing incidence x-ray reflectivity measurements are used to determine the density of sputter-deposited LaAlO3 and anodized LaAl films. Together with refractive index and dielectric constant measurements, it is demonstrated that a coherent picture emerges explaining the low dielectric constant of the amorphous films (∼13) as compared to the single-crystal value (∼26). The importance of molecular volume dependence of the electronic and vibrational molecular polarizabilities is underlined

Additional details

Identifiers

DOI
10.1063/1.1808905;

Publishing Information

Journal Title
Journal of Applied Physics
Journal Volume
96
Journal Issue
11
Journal Page Range
p. 6642-6647
ISSN
0021-8979
CODEN
JAPIAU

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36096886
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINATES; AMORPHOUS STATE; DEPOSITION; DIELECTRIC MATERIALS; GRAZING INCIDENCE TOMOGRAPHY; LANTHANUM COMPOUNDS; MONOCRYSTALS; OXIDATION; PERMITTIVITY; POLARIZABILITY; REFLECTIVITY; REFRACTIVE INDEX; THIN FILMS; VIBRATIONAL STATES
Descriptors DEC
ALUMINIUM COMPOUNDS; CHEMICAL REACTIONS; CRYSTALS; DIAGNOSTIC TECHNIQUES; DIELECTRIC PROPERTIES; ELECTRICAL PROPERTIES; ENERGY LEVELS; EXCITED STATES; FILMS; MATERIALS; OPTICAL PROPERTIES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SURFACE PROPERTIES; TOMOGRAPHY

Optional Information

Notes
(c) 2004 American Institute of Physics