Temperature Dependence ofNuclear Magnetic Resonance in Single-Domain Cobalt Particles
- 10 July 1969
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 183 (2), 559-562
- https://doi.org/10.1103/physrev.183.559
Abstract
The temperature dependence of the nuclear magnetic resonance (NMR) frequency of nuclei in single-domain particles of fcc cobalt metal has been measured in the temperature range between 4.2 and 570°K, using a conventional super-regenerative oscillator spectrometer. Two surprising results have emerged. First, the normalized fractional decrease of the resonance frequency, , can be quite accurately fitted by the simple expression to temperatures as high as about 450°K, with . Second, when these measurements are compared with earlier studies of the temperature dependence in walls of multidomain-Co particles, it is found that the in single-domain particles is greater than that in walls at all temperatures.
Keywords
This publication has 2 references indexed in Scilit:
- Ferromagnetic Nuclear Resonance of Single-Domain Cobalt ParticlesPhysical Review B, 1965
- Bloch Wall Excitation. Application to Nuclear Resonance in a Bloch WallPhysical Review B, 1961