Investigation of the ferromagnetic-spin glass transition in a-(Fe/sub 77/Cr/sub 23/)/sub 75/P/sub 16/B/sub 6/Al/sub 3/
Conference
·
OSTI ID:5488740
Elastic and inelastic neutron scattering studies were performed on the amorphous alloy (Fe/sub 77/Cr/sub 23/)/sub 75/P/sub 16/B/sub 6/Al/sub 3/. These measurements were conducted over a temperature range from 1.8 K to room temperature. The elastic scattering results obtained at Q = 0.025A/sup -1/ indicated a Curie temperature of 185/sup 0/K in addition to a ferromagnetic-spin glass transition below 20 K. These values are consistent with the phase diagram construction resulting from the magnetization and ac susceptibility measurements of Yeshurun et al. Inelastic neutron scattering measurements resulted in well-defined spin waves being observed in the ferromagnetic phase. For the small Q range studied (0.05A/sup -1/ to 0.1A/sup -1/), the spin wave energies followed a quadratic dispersion. As the temperature was lowered towards the spin glass regime, the spin wave energies decreased indicating a softening of the magnetic stiffness constant. Below 10/sup 0/K, no well-defined spin wave excitations were present; however, a quasielastic peak, which increased slightly as the temperature was lowered, was observed.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA); Bell Labs., Murray Hill, NJ (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5488740
- Report Number(s):
- BNL-33827; CONF-831187-10; ON: DE84002874
- Country of Publication:
- United States
- Language:
- English
Similar Records
Investigation of the ferromagnetic-spin glass transition in a-(Fe/sub 77/Cr/sub 23/)/sub 75/P/sub 16/B/sub 6/Al/sub 3/
Spin correlations and reentrant spin-glass behavior in amorphous Fe-Mn alloys. II. Dynamics
Spin Dynamics of the Reentrant Spin Glass Fe{sub 0.7}A1{sub 0.3}
Journal Article
·
Mon Mar 19 23:00:00 EST 1984
· J. Appl. Phys.; (United States)
·
OSTI ID:5257379
Spin correlations and reentrant spin-glass behavior in amorphous Fe-Mn alloys. II. Dynamics
Journal Article
·
Wed Feb 29 23:00:00 EST 1984
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6827516
Spin Dynamics of the Reentrant Spin Glass Fe{sub 0.7}A1{sub 0.3}
Conference
·
Tue Dec 30 23:00:00 EST 1997
·
OSTI ID:622817
Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
BEAMS
BORON ALLOYS
CHROMIUM ALLOYS
CURIE POINT
ELASTIC SCATTERING
FERROMAGNETISM
INELASTIC SCATTERING
IRON ALLOYS
IRON BASE ALLOYS
LOW TEMPERATURE
MAGNETISM
MEDIUM TEMPERATURE
METALLIC GLASSES
NEUTRON BEAMS
NUCLEON BEAMS
PARTICLE BEAMS
PHASE TRANSFORMATIONS
PHOSPHORUS ADDITIONS
PHYSICAL PROPERTIES
SCATTERING
SPIN WAVES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
BEAMS
BORON ALLOYS
CHROMIUM ALLOYS
CURIE POINT
ELASTIC SCATTERING
FERROMAGNETISM
INELASTIC SCATTERING
IRON ALLOYS
IRON BASE ALLOYS
LOW TEMPERATURE
MAGNETISM
MEDIUM TEMPERATURE
METALLIC GLASSES
NEUTRON BEAMS
NUCLEON BEAMS
PARTICLE BEAMS
PHASE TRANSFORMATIONS
PHOSPHORUS ADDITIONS
PHYSICAL PROPERTIES
SCATTERING
SPIN WAVES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE