|
| << previous | next >> |
Journal description
All volumes of the corresponding journal
All issues of the corresponding volume
All articles of the corresponding issues
Details for article 14 of 17 found articles
| Title: |
Spin diffusion in the quasi-two-dimensional magnetic system bis[1,2-bis(2-methoxyethoxy)ethane] sodium biphenylide |
| Author: |
Gribnau, M. C. M. Murugesan, R. van Kempen, H. de Boer, E. |
| Appeared in: |
Molecular physics |
| Paging: | Volume 52 (1984) nr. 1 pages 195-206 |
| Year: |
1984-05 |
| Contents: |
The exchange narrowed E.S.R. line of single crystals of the quasi-two-dimensional magnetic system bis[1,2-bis(2-methoxyethoxy)ethane] sodium biphenylide (NaBp . 2Tg) is studied at 9·4 GHz as a function of temperature from 295 to 1·2 K. At 77 K the linewidth has the characteristic (3 cos2 ϑ-1)2 dependence and the resonance line is non-lorentzian except for the magic angle ϑ=cos-1 (1/✓3). These facts are interpreted in terms of spin diffusion in this two-dimensional magnetic system. At 1·2 K the two-dimensional anomalies are lost and the linewidth and lineshape behave as expected for a three-dimensional magnetic system. The temperature dependence of the linewidth and the linewidth anisotropy indicates that at 1·5 K a crossover takes place from two-dimensional to three-dimensional behaviour. Susceptibility measurements from 270-1·1 K point to a ferromagnetic coupling at high temperatures and an antiferromagnetic coupling at low temperatures. From magnetization measurements it could be concluded that at about 1·1 K the spins in the magnetic planes are antiferromagnetically ordered. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 14 of 17 found articles
| << previous | next >> |