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Title: Magnetic and nonmagnetic impurities in some A-15 structure systems. II. Magnetic properties

Abstract

Measurements are presented of the susceptibility of the A-15 structure systems Nb/sub y/Pt/sub 100-y-x/M/sub x/ where M = Fe and Ru (y = 73--78). These measurements correlated with those of the critical temperature T/sub c/ lead to the conclusion that there is a saturation of the effective number of magnetic impurity atoms and that these atoms are situated on the chains. It was found that the magnetic moment of the Fe atoms depend on the value of y. The high value of the Curie temperature THETA and its variation is discussed with the aid of a model of pairs with antiferromagnetic interaction. In order to describe the formation of the localized moments, the effect of the environment around each impurity was taken into account. Depending on the number and the nature of the nearest neighboring atoms, a magnetic or nonmagnetic behavior of the impurity was deduced. The variation of the moment as a function of the nearest neighbors is explained by supposing electronic redistribution between the atoms, which is the same as supposing an interatomic charge transfer.

Authors:
;
Publication Date:
Research Org.:
Univ., Geneva
OSTI Identifier:
7339581
Resource Type:
Journal Article
Journal Name:
J. Low Temp. Phys.; (United States)
Additional Journal Information:
Journal Volume: 23:5/6
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; NIOBIUM ALLOYS; MAGNETIC SUSCEPTIBILITY; PLATINUM ALLOYS; IRON ALLOYS; RUTHENIUM ALLOYS; ANTIFERROMAGNETIC MATERIALS; ATOMS; CURIE POINT; ELECTRONIC STRUCTURE; IMPURITIES; INTERATOMIC FORCES; IRON; MAGNETIC MOMENTS; MAGNETISM; SUPERCONDUCTORS; TRANSITION TEMPERATURE; ALLOYS; ELEMENTS; MAGNETIC MATERIALS; MAGNETIC PROPERTIES; MATERIALS; METALS; PHYSICAL PROPERTIES; PLATINUM METAL ALLOYS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENTS; 360104* - Metals & Alloys- Physical Properties; 656102 - Solid State Physics- Superconductivity- Acoustic, Electronic, Magnetic, Optical, & Thermal Phenomena- (-1987)

Citation Formats

Bongi, G H, Treyvaud, Fluekiger, R., and Fischer, O. Magnetic and nonmagnetic impurities in some A-15 structure systems. II. Magnetic properties. United States: N. p., 1976. Web. doi:10.1007/BF00116295.
Bongi, G H, Treyvaud, Fluekiger, R., & Fischer, O. Magnetic and nonmagnetic impurities in some A-15 structure systems. II. Magnetic properties. United States. https://doi.org/10.1007/BF00116295
Bongi, G H, Treyvaud, Fluekiger, R., and Fischer, O. Tue . "Magnetic and nonmagnetic impurities in some A-15 structure systems. II. Magnetic properties". United States. https://doi.org/10.1007/BF00116295.
@article{osti_7339581,
title = {Magnetic and nonmagnetic impurities in some A-15 structure systems. II. Magnetic properties},
author = {Bongi, G H and Treyvaud, Fluekiger, R. and Fischer, O},
abstractNote = {Measurements are presented of the susceptibility of the A-15 structure systems Nb/sub y/Pt/sub 100-y-x/M/sub x/ where M = Fe and Ru (y = 73--78). These measurements correlated with those of the critical temperature T/sub c/ lead to the conclusion that there is a saturation of the effective number of magnetic impurity atoms and that these atoms are situated on the chains. It was found that the magnetic moment of the Fe atoms depend on the value of y. The high value of the Curie temperature THETA and its variation is discussed with the aid of a model of pairs with antiferromagnetic interaction. In order to describe the formation of the localized moments, the effect of the environment around each impurity was taken into account. Depending on the number and the nature of the nearest neighboring atoms, a magnetic or nonmagnetic behavior of the impurity was deduced. The variation of the moment as a function of the nearest neighbors is explained by supposing electronic redistribution between the atoms, which is the same as supposing an interatomic charge transfer.},
doi = {10.1007/BF00116295},
url = {https://www.osti.gov/biblio/7339581}, journal = {J. Low Temp. Phys.; (United States)},
number = ,
volume = 23:5/6,
place = {United States},
year = {1976},
month = {6}
}