Published December 2008 | Version v1
Journal article Metadata-only

Impurity effects on Fe- or MgO-doped LiNbO3 crystals studied by 7Li and 93Nb NMR relaxation

Creators

  • 1. Division of Applied Science, Cheongju University, Cheongju 360-764 (Korea, Republic of)
  • 2. Department of Science Education, Jeonju University, Jeonju 560-759 (Korea, Republic of)
  • 3. Laboratoire de Physique des Lasers, Atomes et Molecules, UMR 8523, Centre d'Etudes et de Recherches Lasers et Applications, UFR de Physique, Batiment P5, Universite de Lille-1, 59655 Villeneuve d'Ascq Cedex (France)

Description

The spin-lattice and spin-spin relaxation times of 7Li and 93Nb nuclei were investigated as a function of the concentration of Fe or MgO species in LiNbO3 crystals using pulse NMR spectrometry. The spin-lattice relaxation times T1 of both nuclei were found to decrease as the number of Fe impurities increased in Fe-doped LiNbO3 single crystals, because of paramagnetic-impurity effects. On the other hand, the T1 values of the 7Li and 93Nb nuclei in LiNbO3:MgO crystals remained nearly constant with increasing MgO concentration. The T1 of 7Li was found to be longer than that of 93Nb for both Fe- or MgO-doped single crystals. The spin-spin relaxation times T2 of the 7Li and 93Nb nuclei remained nearly constant with increasing concentration of Fe or MgO. From our results, we can conclude that T1 depends on the concentration of Fe impurities but is independent of the concentration of Mg impurities. (copyright 2008 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1002/pssb.200844166

Additional details

Identifiers

DOI
10.1002/pssb.200844166;

Publishing Information

Journal Title
Physica Status Solidi. B, Basic Research
Journal Volume
245
Journal Issue
12
Journal Page Range
p. 2821-2825
ISSN
0370-1972
CODEN
PSSBBD

Conference

Title
8. international conference on exciton processes in condensed matter
Acronym
EXCON'08
Dates
22-27 Jun 2008
Place
Kyoto (Japan)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
40000248
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
DOPED MATERIALS; EXPERIMENTAL DATA; HEXAGONAL LATTICES; IRON ADDITIONS; LITHIUM 7; LITHIUM COMPOUNDS; MAGNESIUM OXIDES; MONOCRYSTALS; NIOBATES; NIOBIUM 93; NUCLEAR MAGNETIC RESONANCE; RELAXATION TIME; SPIN-LATTICE RELAXATION; SPIN-SPIN RELAXATION
Descriptors DEC
ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; ALLOYS; CHALCOGENIDES; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CRYSTALS; DATA; INFORMATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; IRON ALLOYS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LIGHT NUCLEI; LITHIUM ISOTOPES; MAGNESIUM COMPOUNDS; MAGNETIC RESONANCE; MATERIALS; NIOBIUM COMPOUNDS; NIOBIUM ISOTOPES; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; OXIDES; OXYGEN COMPOUNDS; RADIOISOTOPES; REFRACTORY METAL COMPOUNDS; RELAXATION; RESONANCE; STABLE ISOTOPES; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
With 5 figs., 37 refs.. SICI: 0370-1972(200812)245:12<2821::AID-PSSB200844166>3.0.TX;2-1