Abstract
Recent experimental studies on NaTiO 2 and LiNiO 2 suggest that they might be rare compounds of 2D triangular lattice antiferromagnet with S =1/2, the former being Heisenberg-like and the latter being Ising-like. We have studied ESR from 1.5 K to 300 K. In NaTiO 2 a broad ESR signal was observed at 300 K. A sharp ESR signal grows below ∼250 K and continues to increase the intensity toward 0 K. In LiNiO 2 , we found clear dip in resonance width at 210 K corresponding to the para- to ferrimagnet-like transition but no change in resonance field on passing through it. Contrary to this, a remarkable divergence of the width was found at ∼19 K and a shift of resonance field starts below it, though no magnetic order has been detected by neutron scattering. Possible origin of these phenomena is discussed.
Keywords
AntiferromagnetismCondensed matter physicsFerrimagnetismHexagonal latticePhysicsLattice (music)Neutron scatteringResonance (particle physics)ScatteringMaterials scienceMagnetic fieldAtomic physicsMagnetizationQuantum mechanics
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Publication Info
- Year
- 1985
- Type
- article
- Volume
- 54
- Issue
- 9
- Pages
- 3571-3576
- Citations
- 40
- Access
- Closed
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Cite This
Isao Yamada,
Koji Ubukoshi,
Kinshiro Hirakawa
(1985).
ESR Study of the Triangular Lattice Antiferromagnets with <i>S</i>=1/2: NaTiO<sub>2</sub> and LiNiO<sub>2</sub>.
Journal of the Physical Society of Japan
, 54
(9)
, 3571-3576.
https://doi.org/10.1143/jpsj.54.3571
Identifiers
- DOI
- 10.1143/jpsj.54.3571