Magnetic hyperfine structure in amorphous DyFe$sub 2$

Conference · Wed Jan 01 04:00:00 EST 1975 · AIP (Am. Inst. Phys.) Conf. Proc., no. 24, pp. 115-116

OSTI ID:4151541

Forester, D W; Abbundi, R; Segnan, R; Sweger, D

Results are summarized of a Moessbauer study of the amorphous rare earth- -transition metal alloy DyFe$sub 2$ in the magnetically ordered state. Both the $sup 57$Fe and $sup 161$Dy spectra were investigated as a function of temperature and reveal a broad, though measurable, distribution of Fe hyperfine fields (H/sub eff/) and quadrupole splittings (QS). There is a distribution similar in magnitude for the Dy hyperfine fields but the observed quadrupole splittings are narrowly distributed. The temperature variation of the $sup 161$Dy spectra indicates a large variation of local exchange splittings at the Dy sites. These results are discussed in terms of a model in which the Dy spins are more strongly coupled to their random-direction anisotropy axes than to the neighboring Fe spins (which also experience a weaker random-direction anisotropy.) (auth)

• Research Organization: Naval Research Lab., Washington, DC
• NSA Number: NSA-33-003567
• OSTI ID: 4151541
• Conference Information: Journal Name: AIP (Am. Inst. Phys.) Conf. Proc., no. 24, pp. 115-116
• Country of Publication: United States
• Language: English

Related Subjects

*DYSPROSIUM 161-- MOESSBAUER EFFECT
*DYSPROSIUM ALLOYS-- MAGNETIC PROPERTIES
*IRON 57-- MOESSBAUER EFFECT
*IRON ALLOYS-- MAGNETIC PROPERTIES
360104* --Materials--Metals & Alloys--Physical Properties
AMORPHOUS STATE
HYPERFINE STRUCTURE
INTERMETALLIC COMPOUNDS
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
TEMPERATURE DEPENDENCE