High-resolution 31P nuclear magnetic resonance study of phase transitions in TlH2PO4
- Resource Type
- Authors
- Cheol Eui Lee; N. S. Dalal; Riqiang Fu
- Source
- Current Applied Physics. 3:405-408
- Subject
- Quantum phase transition
Phase transition
Laser linewidth
Nuclear magnetic resonance
Condensed matter physics
Chemistry
Isotropy
General Physics and Astronomy
Antiferroelectricity
Ferroics
General Materials Science
Anisotropy
Ferroelectricity
- Language
- ISSN
- 1567-1739
High-resolution 31 P nuclear magnetic resonance (NMR) techniques were employed to study a KH 2 PO 4 -type ferroelectric system, TlH 2 PO 4 . A marked temperature dependence of the isotropic chemical shift below the ferroelastic phase transition temperature is indicative of an electronic instability. The NMR linewidth showed a discontinuity at the ferroelastic phase transition, and the anisotropy was measured to increase rapidly below the antiferroelectric phase transition. Thus, the changes in the microscopic environments associated with the phase transitions were sensitively reflected in a characteristic manner.