Comparison of magnetic and electrical properties of amorphous (Fe sub 1 minus x M sub x ) sub 75 Si sub 15 B sub 10 : M =Co, Cr

Journal Article · Fri Nov 15 00:00:00 EST 1991 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.349981· OSTI ID:5057169

Bhatnagar, A K; Rao, G V; Munirathnam, N R ^[1]

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1. School of Physics, University of Hyderabad, Hyderabad 500 134 (India)

Amorphous (Fe{sub 1{minus}{ital x}}{ital M}{sub {ital x}}){sub 75}Si{sub 15}B{sub 10} ({ital M}=Co, Cr and 0.00{le}{ital x}{le}0.12) metallic glasses have been investigated using Fe{sup 57} Moessbauer spectroscopy and electrical resistivity measurements. With Co substitution, hyperfine magnetic field ({ital H}{sub eff}) decreases initially and then levels off, whereas Curie temperature ({ital T}{sub {ital c}}) initially increases before leveling off. Chromium substitution results, however, in a substantial decrease of {ital H}{sub eff} ({similar to}6.5 kOe/at. % of Cr) and {ital T}{sub {ital c}} ({similar to}30 K/at. % of Cr). Hyperfine field distribution {ital P}({ital H}) for Fe{sub 75}Si{sub 15}B{sub 10} does not change much with Co substitution but it shows substantial changes with Cr substitution. Temperature dependence of resistivity shows a minimum for both kinds of samples. The temperature at which a minimum in resistance is observed shows no shift with Co substitution, while the minimum increases in temperature with Cr substitution. Indirect evidence is presented for the magnetic contribution to the total resistivity for Fe-Co-Si-B samples.

• OSTI ID: 5057169
• Journal Information: Journal of Applied Physics; (United States), Vol. 70:10; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BORON ALLOYS
AMORPHOUS STATE
CHROMIUM ALLOYS
COBALT ALLOYS
IRON BASE ALLOYS
SILICON ALLOYS
ELECTRIC CONDUCTIVITY
LOW TEMPERATURE
MEDIUM TEMPERATURE
MOESSBAUER EFFECT
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
ALLOYS
ELECTRICAL PROPERTIES
IRON ALLOYS
PHYSICAL PROPERTIES
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