Published 1986
| Version v1
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NMR Study of the change in the direction of magetization of HoCo2
- 1. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro
- 2. Espirito Santo Univ., Vitoria (Brazil). Dept. de Fisica e Quimica
Description
The intermetallic compound HoCo2 is magnetically ordered and changes its direction of magnetization around 15 k, as the temperature is increased, from [110] to [100]. A 59Cc pulsed NMR study of HoCo2 is reported in the temperature range 4 k- 65 k. The NMR spectra show two peaks at low temperature and one peak at high temperatures, as expected from a model whereby the magnetic equivalence of the cobalt sites is determined by the direction of magnetization. This change in the spectra can be simulated from lattice sums of the magnetic dipolar fields acting on the cobalt sites. The present results are consistent with a change of direction of magnetization from [110] to [100] through intermediate directions contained in the plane z=0. (Author)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
O Composto intermetalico HoCo2 e magneticamente ordenado e troca a sua direcao de magnetizacao em torno de 15 k, quando a temperatura aumenta, de [110] a [100]. Relata-se um estudo de RMN pulsada de 59Co do HoCo2 na faixa de temperatura de 4 k - 65 k. Os espectros de RMN mostram dois picos a baixa temperatura e um pico a altas temperaturas, como esperado de um modelo pelo qual a equivalencia magnetica dos sitios de cobalto e determinada pela direcao de magnetizacao. Essa troca nos espectros podem ser simuladas das somas da redes dos campos dipolares magneticos atuando sobre os sitios de cobalto. Os presentes resultados sao consistentes com uma troca de direcao de magnetizacao de [110] para [100] atraves de direcoes intermediarias contidas no plano z=0. (L.C.)Files
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Additional details
Publishing Information
- Imprint Pagination
- 13 p.
- Report number
- CBPF-NF--052/86
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 18074660
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- COBALT COMPOUNDS; EXPERIMENTAL DATA; FREQUENCY DEPENDENCE; HOLMIUM COMPOUNDS; INTERMETALLIC COMPOUNDS; MAGNETIC FIELDS; MAGNETIZATION; NUCLEAR MAGNETIC RESONANCE; SPIN ORIENTATION; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE
- Descriptors DEC
- ALLOYS; DATA; INFORMATION; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; MAGNETIC RESONANCE; NUMERICAL DATA; ORIENTATION; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; RESONANCE; TRANSITION ELEMENT COMPOUNDS