La NQR Study of Antiferromagnetic La2NiO4+δ

Shinji Wada, Tatsuo Kobayashi, Makoto Kaburagi

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8 Citations (Scopus)

Abstract

The magnetic properties in the La2Ni04+δ system have been investigated by 139La nuclear quadrupole resonance (NQR). The structure of the NQR spectrum at 1.4 K was found to depend sensitively on annealing procedures of the compounds, and therefore on δ. A well-characterized spectrum was obtained for samples oxygenated (δ≧ 0.066) and deoxygenated (δ~0.022) with different structures, exhibiting the existence of the internal magnetic fieldsHmt of ~17.8 kOe nearly parallel to the basal Ni-O plane and ~19.3 kOe perpendicular to the plane. The strength ofHm at the La site was significantly large when compared with that of ~ 1 kOe in La2CuO4 and could not be explained simply by the dipole field caused by Ni spin moments.

Original languageEnglish
Pages (from-to)2658-2661
Number of pages4
Journaljournal of the physical society of japan
Volume58
Issue number8
DOIs
Publication statusPublished - Jan 1 1989
Externally publishedYes

Keywords

  • antiferromagnetism
  • layered perovskite
  • nuclear quadrupole resonance

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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