Published May 1974
| Version v1
Journal article
Diffusion of zinc and iron in pure cobalt and diffusion of iron in two iron-cobalt alloys
Creators
- 1. Rio Grande do Sul Univ., Porto Alegre (Brazil). Instituto de Fisica
- 2. California Univ., Los Angeles (USA)
Description
The diffusion coefficients D of radioactive Fe59 and Zn65 in single crystals of pure cobalt and Fe59 in single crystals of Co-6%-Fe and Co-10%-Fe are measured using Gruzin's residual active method over the range 8080C-13000C. Pure cobalt and the alloys undergo a ferromagnetic-paramagnetic transition in this temperature range. A plot ln D vs. (1/T), where D is the diffusivity and T is absolute temperature, deviates from linearity in the neighborhood of the Curie temperature
Abstract (Portuguese)
Os coeficientes de difusao dos elementos radioativos Fe59 e Zn65 em cristais unicos de cobalto puro e de Fe59 em cristais unicos das ligas Co-6%-Fe e Co-10%-Fe foram medidos, usando-se o metodo da atividade residual de Gruzin, no intervalo de temperatura 8080C-13000C. O cobalto puro e as ligas acima mencionadas experimentam uma mudanca de fase ferromagnetica-paramagnetica neste intervalo de temperatura. Um grafico ln D vs. 1/T onde D e o coeficiente de difusao e T e a temperatura absoluta, desvia-se da linearidade na vizinhanca da temperatura de Curie de cada um dos materiais estudadosAdditional details
Publishing Information
- Journal Title
- Rev. Bras. Fis.
- Journal Volume
- 4
- Journal Issue
- 1
- Series
- Rev. Bras. Fis.
- Journal Page Range
- 1-10
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 9380658
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ACTIVATION ENERGY; COBALT ALLOYS; CURIE POINT; DIFFUSION; FERROMAGNETISM; IRON BASE ALLOYS; IRON 59; PARAMAGNETISM; PHASE TRANSFORMATIONS; VERY HIGH TEMPERATURE
- Descriptors DEC
- ALLOYS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DAYS LIVING RADIOISOTOPES; ENERGY; EVEN-ODD NUCLEI; INTERMEDIATE MASS NUCLEI; IRON ALLOYS; IRON ISOTOPES; ISOTOPES; MAGNETISM; NUCLEI; PHYSICAL PROPERTIES; RADIOISOTOPES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS; TRANSITION TEMPERATURE