Published September 11, 1995
| Version v1
Journal article
Spin correlations and magnetic field effects in the weakly anisotropic square-lattice antiferromagnet Sr2CuO2Cl2
Creators
- 1. Dipartimento di Fisica ''A. Volta'', Universita di Pavia, I-27100 Pavia (Italy)
- 2. Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
Description
35Cl nuclear spin-lattice relaxation rate (NSLR) and magnetic susceptibility (χ) measurements are reported for Sr2CuO2Cl2 single crystals as functions of temperature and of magnetic field intensity and orientation. From the anisotropy of the 35Cl NSLR and χ we obtained evidence for a crossover of the Cu2+ spin correlations from Heisenberg to XY-like at T∼290 K. For H parallel c the 3D antiferromagnetic transition is at TN=257 K and is field independent while for H parallel ab TN increases to 265 K at H=8.2 T. The field-dependent TN for H parallel ab is explained by a field-induced Ising-like anisotropy in the ab plane
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 75
- Journal Issue
- 11
- Journal Page Range
- p. 2212-2215.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27055701
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ANISOTROPY; CHLORIDES; COPPER OXIDES; HEISENBERG MODEL; MAGNETIC SUSCEPTIBILITY; MAGNETISM; MONOCRYSTALS; NUCLEAR MAGNETIC RESONANCE; PEROVSKITES; PHASE TRANSFORMATIONS; SPIN-LATTICE RELAXATION; STRONTIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; CHLORINE COMPOUNDS; COPPER COMPOUNDS; CRYSTAL MODELS; CRYSTALS; HALIDES; HALOGEN COMPOUNDS; MAGNETIC PROPERTIES; MAGNETIC RESONANCE; MATHEMATICAL MODELS; MINERALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RELAXATION; RESONANCE; TRANSITION ELEMENT COMPOUNDS