TDPAC study of complex structure semiconductor compounds; The case of niobium pentoxide

Journal Article · Mon Jul 20 00:00:00 EDT 1992 · International Journal of Modern Physics A; (United States)

DOI:https://doi.org/10.1142/S0217979292001171· OSTI ID:7143461

Shitu, J; Renteria, M; Massolo, C P; Bibiloni, A G; Desimonni, J ^[1]

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1. Departamento de Fisica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.C. No. 67, 1900 La Plata (AR)

In this paper, a new method for analyzing Time-Differential Perturbed Angular Correlation spectra is presented and applied to study the hyperfine interaction of {sup 100}Rh in the high temperature modification of niobium pentoxide. The measured quadrupole interactions are assigned to about 80% of the radioactive probes replacing niobium atoms in the lattice and about 20% located in perturbed sites. The origin of this perturbation, producing a high frequency component in the measured spectra is discussed and temptatively assigned to remaining radiation damage in the compound. The hyperfine interaction of {sup 111}Cd probes, introduced through thermal diffusion into niobium pentoxide, is also presented. The temperature dependence of the hyperfine parameters in this case is studied in the temperature range RT-800{degrees} C. The spectral analyzing method employed allows a direct comparison of experimental data with point charge model calculations and a simultaneous evaluation of the antishielding factor {beta}. The obtained values (27 for {sup 100}Rh and 15 for {sup 111}Cd) are discussed in terms of the compound and probe's characteristics.

• OSTI ID: 7143461
• Journal Information: International Journal of Modern Physics A; (United States), Vol. 7:18; ISSN 0217-751X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
NIOBIUM OXIDES
CRYSTAL STRUCTURE
RHODIUM 100
HYPERFINE STRUCTURE
CADMIUM 111
DIFFERENTIAL PAC
DIFFUSION
MEASURING METHODS
MODIFICATIONS
QUADRUPOLES
SEMICONDUCTOR MATERIALS
TEMPERATURE EFFECTS
TEMPERATURE RANGE 1000-4000 K
TIME DEPENDENCE
ANGULAR CORRELATION
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CADMIUM ISOTOPES
CHALCOGENIDES
CORRELATIONS
ELECTRON CAPTURE RADIOISOTOPES
EVEN-ODD NUCLEI
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
MINUTES LIVING RADIOISOTO
MINUTES LIVING RADIOISOTOPES
MULTIPOLES
NIOBIUM COMPOUNDS
NUCLEI
OXIDES
OXYGEN COMPOUNDS
PERTURBED ANGULAR CORRELATION
RADIOISOTOPES
REFRACTORY METAL COMPOUNDS
STABLE ISOTOPES
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360204 - Ceramics
Cermets
& Refractories- Physical Properties
665100 - Nuclear Techniques in Condensed Matter Physics - (1992-)