Magnetic properties of crystalline random anisotropy Tb sub x Y sub 1 minus sub x Al sub 2 magnets

Journal Article · Mon Apr 15 04:00:00 EDT 1991 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.348150· OSTI ID:5812797

Joven, E; del Moral, A; Arnaudas, J I ^[1]

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1. Laboratorio de Magnetismo, DFMC ICMA, Universidad de Zaragoza CSIC, 50009 Zaragoza, Spain (ES)

The magnetic phase diagram of the crystalline dilute magnets Tb{sub {ital x}}Y{sub 1{minus}{ital x}}Al{sub 2} has been determined, showing spin-glass reentrance into a quasiferromagnetic (QF) phase for {ital x}{sub {ital t}} {ge} 0.27 and {ital T} {le} 8.6 K, the tricritical point. The effective percolation limit is {ital x}{sub {ital p}}=0.16 with a critical line separating the paramagnetic and QF regimes of exponent {phi}{sub {ital p}}=1.1. No signs of saturation magnetization are found, nor of any clear divergence of the dc zero-field susceptibility. On the spin-glass side of these series ({ital x}{lt}0.27), the order parameters {ital q} (frozen local moment) and {Delta} (irreversibility parameter) have been determined from the field- and zero-field-cooled measured susceptibilities.

• OSTI ID: 5812797
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 69:8; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOY SYSTEMS
ALLOYS
ALUMINIUM ALLOYS
DIAGRAMS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
PARAMAGNETISM
PHASE DIAGRAMS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SPIN GLASS STATE
TERBIUM ALLOYS
TERNARY ALLOY SYSTEMS
YTTRIUM ALLOYS