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Structure defects in malachite revealed by positron annihilation

Journal Article:

Abstract

Positron lifetime is measured between 77 and 400 K in two malachite samples with different mineralogical structures. The complex spectrum found in zoned malachite reveals a microporosity which remains stable in this range of temperature. Besides, above 200 K, equilibrium defects appear. Their formation energy is estimated to be Esub(f) = 0.27 +- 0.02 eV.
Authors:
Geffroy, B; Diallo, I; Paulin, R [1] 
  1. Institut National des Sciences et Techniques Nucleaires, CEN/Saclay, 91 - Gif-sur-Yvette (France)
Publication Date:
Jan 01, 1984
Product Type:
Journal Article
Reference Number:
FR-85-00672; EDB-85-099844
Resource Relation:
Journal Name: Bull. Mineral.; (France); Journal Volume: 107:6
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; POSITRONS; ANNIHILATION; COPPER CARBONATES; DOPPLER EFFECT; GAMMA SPECTRA; LIFETIME; LOW TEMPERATURE; MEDIUM TEMPERATURE; TRAPPING; VACANCIES; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BASIC INTERACTIONS; CARBON COMPOUNDS; CARBONATES; COPPER COMPOUNDS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; INTERACTIONS; LEPTONS; OXYGEN COMPOUNDS; POINT DEFECTS; SPECTRA; TRANSITION ELEMENT COMPOUNDS; 654001* - Radiation & Shielding Physics- Radiation Physics, Shielding Calculations & Experiments
OSTI ID:
5768791
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Journal ID: CODEN: BULMD
Submitting Site:
HEDB
Size:
Pages: 795-798
Announcement Date:
Jun 01, 1985

Journal Article:

Citation Formats

Geffroy, B, Diallo, I, and Paulin, R. Structure defects in malachite revealed by positron annihilation. France: N. p., 1984. Web.
Geffroy, B, Diallo, I, & Paulin, R. Structure defects in malachite revealed by positron annihilation. France.
Geffroy, B, Diallo, I, and Paulin, R. 1984. "Structure defects in malachite revealed by positron annihilation." France.
@misc{etde_5768791,
title = {Structure defects in malachite revealed by positron annihilation}
author = {Geffroy, B, Diallo, I, and Paulin, R}
abstractNote = {Positron lifetime is measured between 77 and 400 K in two malachite samples with different mineralogical structures. The complex spectrum found in zoned malachite reveals a microporosity which remains stable in this range of temperature. Besides, above 200 K, equilibrium defects appear. Their formation energy is estimated to be Esub(f) = 0.27 +- 0.02 eV.}
journal = {Bull. Mineral.; (France)}
volume = {107:6}
journal type = {AC}
place = {France}
year = {1984}
month = {Jan}
}