You need JavaScript to view this

Study of betaine calcium chloride dihydrate (BCCD) by neutrons inelastic scattering; Etude du chlorure de betaine et de calcium dihydrate (BCCD) par diffusion inelastique de neutrons

Abstract

The aim of this work is to study the betaine calcium chloride dihydrate (BCCD) lattice dynamics by neutrons inelastic and coherent scattering. In the first part are summarized the main properties of the BCCD as they are determined in some previous experimental works. It has been more particularly emphasized on the structural and dynamical properties of this compound. The theoretical concepts used in incommensurate dielectric materials physics are given in the second part. They are at first introduced generally and then applied to BCCD. In the third part is described the experimental method used in this work : the neutrons inelastic scattering. The experimental results on the BCCD normal phase dynamics are then presented. These results and their interpretation allow to build up a semi-microscopic model introduced in the fifth part. The incommensurate lattice dynamics (at 20 K under the transition temperature towards the modulated phase) is studied in the last part. It has been shown that new aspects in relation to the previous works appear in BCCD. (O.L.). 121 refs., 25 figs., 5 tabs.
Authors:
Publication Date:
Jun 27, 1995
Product Type:
Thesis/Dissertation
Report Number:
FRCEA-TH-541
Reference Number:
SCA: 665100; PA: AIX-27:058752; EDB-96:124268; NTS-97:000779; SN: 96001635903
Resource Relation:
Other Information: TH: These (D. es Sc.).; PBD: 27 Jun 1995
Subject:
66 PHYSICS; INELASTIC SCATTERING; BETAINE; CALCIUM CHLORIDES; NEUTRONS; ANHARMONIC CRYSTALS; BRILLOUIN ZONES; CRYSTAL DEFECTS; CRYSTAL-PHASE TRANSFORMATIONS; FERROELECTRIC MATERIALS; INFRARED SPECTRA; LATTICE VIBRATIONS; NEUTRON DIFFRACTION; ORPHEE REACTOR; OSCILLATION MODES; PHASE DIAGRAMS; PHONONS; RAMAN SPECTROSCOPY; STRUCTURAL MODELS; X RADIATION; X-RAY DIFFRACTION
OSTI ID:
265973
Research Organizations:
Laboratoire Leon Brillouin (LLB) - Centre d`Etudes de Saclay, 91 - Gif-sur-Yvette (France); Paris-11 Univ., 91 - Orsay (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE96632828; TRN: FR9602023058752
Availability:
INIS; OSTI as DE96632828
Submitting Site:
FRN
Size:
194 p.
Announcement Date:

Citation Formats

Hlinka, J. Study of betaine calcium chloride dihydrate (BCCD) by neutrons inelastic scattering; Etude du chlorure de betaine et de calcium dihydrate (BCCD) par diffusion inelastique de neutrons. France: N. p., 1995. Web.
Hlinka, J. Study of betaine calcium chloride dihydrate (BCCD) by neutrons inelastic scattering; Etude du chlorure de betaine et de calcium dihydrate (BCCD) par diffusion inelastique de neutrons. France.
Hlinka, J. 1995. "Study of betaine calcium chloride dihydrate (BCCD) by neutrons inelastic scattering; Etude du chlorure de betaine et de calcium dihydrate (BCCD) par diffusion inelastique de neutrons." France.
@misc{etde_265973,
title = {Study of betaine calcium chloride dihydrate (BCCD) by neutrons inelastic scattering; Etude du chlorure de betaine et de calcium dihydrate (BCCD) par diffusion inelastique de neutrons}
author = {Hlinka, J}
abstractNote = {The aim of this work is to study the betaine calcium chloride dihydrate (BCCD) lattice dynamics by neutrons inelastic and coherent scattering. In the first part are summarized the main properties of the BCCD as they are determined in some previous experimental works. It has been more particularly emphasized on the structural and dynamical properties of this compound. The theoretical concepts used in incommensurate dielectric materials physics are given in the second part. They are at first introduced generally and then applied to BCCD. In the third part is described the experimental method used in this work : the neutrons inelastic scattering. The experimental results on the BCCD normal phase dynamics are then presented. These results and their interpretation allow to build up a semi-microscopic model introduced in the fifth part. The incommensurate lattice dynamics (at 20 K under the transition temperature towards the modulated phase) is studied in the last part. It has been shown that new aspects in relation to the previous works appear in BCCD. (O.L.). 121 refs., 25 figs., 5 tabs.}
place = {France}
year = {1995}
month = {Jun}
}