Published September 1974 | Version v1
Journal article Metadata-only

Short range order effects on NMR linewidths in paramagnets

Creators

  • 1. California Univ., Santa Barbara (USA). Dept. of Physics

Description

The theory of Moriya for the temperature dependence of the exchange narrowed-hyperfine broadened NMR linewidths in paramagnets is reformulated so as to include the effects of short range order. A comparison is made between the present work and the Hubbard correlation function theory, as well as with our own experiments on the F19 NMR in MnF2 and KMnF3 in the paramagnetic region. In both instances the results are most satisfactory

Abstract (Portuguese)

A teoria de Moriya sobre a dependencia, com a temperatura, da largura da linha NMR alargada por interacao hiperfina e estreitada por interacao de troca e reformulada de maneira a incluir os efeitos da ordem de curto alcance. Os resultados obtidos sao comparados com os da teoria da funcao de correlacao de Hubbard bem como com os resultados experimentais de NMR do F19 em MnF2 e KMnF3, na fase paramagnetica. Em ambos os casos se obtem boa concordancia

Additional details

Publishing Information

Journal Title
Rev. Bras. Fis.
Journal Volume
4
Journal Issue
2
Series
Rev. Bras. Fis.
Journal Page Range
299-321

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
9380792
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
COMPARATIVE EVALUATIONS; CORRELATION FUNCTIONS; FLUORINE 19; INTERACTION RANGE; LINE WIDTHS; MANGANESE FLUORIDES; NUCLEAR MAGNETIC RESONANCE; PARAMAGNETISM; POTASSIUM COMPOUNDS; TEMPERATURE DEPENDENCE
Descriptors DEC
ALKALI METAL COMPOUNDS; DISTANCE; FLUORIDES; FLUORINE COMPOUNDS; FLUORINE ISOTOPES; FUNCTIONS; HALIDES; HALOGEN COMPOUNDS; ISOTOPES; LIGHT NUCLEI; MAGNETIC RESONANCE; MAGNETISM; MANGANESE COMPOUNDS; NUCLEI; ODD-EVEN NUCLEI; RESONANCE; STABLE ISOTOPES; TRANSITION ELEMENT COMPOUNDS