B. —DISORDERED METALLIC ALLOYS. MAGNETISM IN DISORDERED METALLIC SYSTEMS : THE LOCAL ENVIRONMENT EFFECTS.INHOMOGENEOUS CHARACTER OF THE TRANSITION NON MAGNETISM-MAGNETISM IN ALLOYS THROUGH MAGNETIC MEASUREMENTS

Autor: J. P. Perrier, J. L. Tholence
Rok vydání: 1974
Předmět:
Zdroj: Journal de Physique Colloques
Journal de Physique Colloques, 1974, 35 (C4), pp.C4-163-C4-172. ⟨10.1051/jphyscol:1974429⟩
ISSN: 0449-1947
DOI: 10.1051/jphyscol:1974429
Popis: Magnetic measurements allow a detailed study of the transition from non-magnetism to magnetism of an alloy. The study of alloys in which this transition occurs for low concentrations allows the deduction of a simple model relating the behavior of an impurity with neighbouring impurities. For alloys in which the transition occurs in a higher concentration range, a model can no longer be deduced from the simple analysis of experimental results. The extension of the model found for dilute alloys allows a good understanding of the main characteristic phenomena of concentrated alloys (particularly the superparamagnetism of giant moments). Polarization effects of passive sites by active ones, clearly shown on ternary alloys, provide a more detailed model of the behavior of alloys in the transition range.
Databáze: OpenAIRE
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