Temperature dependence of the hyperfine field distributions in the Fe[sub 93. 5[minus][ital x]]Nd[sub [ital x]]Zr[sub 6. 5] ([ital x]=0, 2) amorphous alloys

Journal Article · Sun May 15 04:00:00 EDT 1994 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.355537· OSTI ID:7284252

Nicolaides, G K; Pissas, M; Niarchos, D; Taylor, R D; Rao, K V ^[1]

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1. National Center for Scientific Research Demokritos,'' Institute of Materials Science Aghia Paraskevi, Attikis 153 10 (Greece)

The 112 K spin-glass Fe[sub 93.5]Zr[sub 6.5] and the reentrant Fe[sub 91.5]Nd[sub 2]Zr[sub 6.5] amorphous alloys have been studied at various temperatures with Moessbauer spectroscopy technique. At around [ital T]=135 K for the Fe[sub 93.5]Zr[sub 6.5] and at around [ital T]=255 K for the Fe[sub 91.5]Nd[sub 2]Zr[sub 6.5], six broad lines appear, which are not well resolved. This broadening is ascribed to the magnitude distribution of the magnetic moments of the Fe atoms. From the fitting of the Moessbauer spectra at [ital T]=4.2 K, the mean hyperfine field [l angle][ital H][r angle] and the Ecart-type standard deviation [sigma][sub [ital H]] were estimated, and are (i) for the Fe[sub 93.5]Zr[sub 6.5] sample, [l angle][ital H][r angle][approx]205 kOe, and [sigma][sub [ital H]][approx]77 kOe; (ii) for the Fe[sub 91.5]Nd[sub 2]Zr[sub 6.5] sample, [l angle][ital H][r angle][approx]228 kOe and [sigma][sub [ital H]][approx]70 kOe. These values are found to be relatively consistent with the expected degree of magnetic frustration of the correspondingly Fe moments, according to the Fe content of these alloys.

• OSTI ID: 7284252
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 75:10; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOY SYSTEMS
ALLOYS
AMORPHOUS STATE
IRON ALLOYS
IRON BASE ALLOYS
MOESSBAUER EFFECT
NEODYMIUM ALLOYS
RARE EARTH ALLOYS
SPIN GLASS STATE
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0065-0273 K
TERNARY ALLOY SYSTEMS
ZIRCONIUM ALLOYS