Magnetostatic Effects in the Nucleation of Rare Earth Ferromagnetic Phases

Journal Article · Mon Jul 30 00:00:00 EDT 2001 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.87.057202· OSTI ID:40277300

Durfee, C S; Flynn, C P

It has been reported that superheating, supercooling, and explosive kinetics coupled to other degrees of freedom occur at the ferromagnetic transitions of Er and Dy, and that metastable phases occur during the transition kinetics of Er. We explain these observations in terms of magnetostatic energy, which requires highly eccentric nuclei in the homogeneous nucleation of magnetic transitions in heavy rare earths. The magnetostatics favor transitions through ferrimagnetic intermediaries. The unusual kinetics derive from effective spin lattice relaxation.

• Research Organization: Univ. of Illinois at Urbana-Champaign, IL (United States)
• Sponsoring Organization: (US)
• DOE Contract Number: FG02-91ER45439
• OSTI ID: 40277300
• Journal Information: Physical Review Letters, Vol. 87, Issue 5; Other Information: DOI: 10.1103/PhysRevLett.87.057202; Othernumber: PRLTAO000087000005057202000001; 033131PRL; PBD: 30 Jul 2001; ISSN 0031-9007
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DEGREES OF FREEDOM
EXPLOSIVES
KINETICS
NUCLEATION
NUCLEI
RARE EARTHS
SPIN-LATTICE RELAXATION
SUPERHEATING