Unconventional Ferromagnetic and Spin-Glass States of the Reentrant Spin Glass Fe{sub 0.7 }Al{sub 0.3}

Journal Article · Tue Jun 01 00:00:00 EDT 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.4711· OSTI ID:345442

Bao, W; Raymond, S; Shapiro, S M ^[1]; Bao, W ^[2]; Raymond, S; Fak, B ^[3]; Motoya, K ^[4]; Erwin, R W ^[5]

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1. Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. CEA-Grenoble, DRFMC-SPSMS, 38054 Grenoble Cedex 9 (France)
4. Science University of Tokyo, Noda 278 (Japan)
5. National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)

Spin excitations in a single crystal of Fe{sub 0.7}Al {sub 0.3} were investigated over a wide range of energy and reciprocal space with inelastic neutron scattering. In the ferromagnetic phase, propagating spin wave modes become paramagnonlike diffusive modes beyond a critical wave vector {bold q}{sub 0} , indicating substantial disorder in the long-range ordered state. In the spin glass phase, the spin dynamics are strongly q dependent, suggesting remnant short-range spin correlations. {copyright} {ital 1999} {ital The American Physical Society}

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 345442
• Journal Information: Physical Review Letters, Vol. 82, Issue 23; Other Information: PBD: Jun 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
FERROMAGNETISM
SPIN GLASS STATE
BINARY ALLOY SYSTEMS
NEUTRON DIFFRACTION
INELASTIC SCATTERING
IRON ALLOYS
ALUMINIUM ALLOYS
SPIN WAVES