Reentrant spin glass ordering in an Fe-based bulk metallic glass
- School of Materials Science and Engineering, Tongji University, Shanghai 201804 (China)
We report the results of the complex susceptibility, temperature, and field dependence of DC magnetization and the nonequilibrium dynamics of a bulk metallic glass Fe{sub 40}Co{sub 8}Cr{sub 15}Mo{sub 14}C{sub 15}B{sub 6}Er{sub 2}. Solid indication of the coexistence of reentrant spin glass (SG) and ferromagnetic orderings is determined from both DC magnetization and AC susceptibility under different DC fields. Dynamics scaling of AC susceptibility indicates critical slowing down to a reentrant SG state with a static transition temperature T{sub s} = ∼17.8 K and a dynamic exponent zv = ∼7.3. The SG nature is further corroborated from chaos and memory effects, magnetic hysteresis, and aging behavior. We discuss the results in terms of the competition among random magnetic anisotropy and exchange interactions and compare them with simulation predictions.
- OSTI ID:
- 22413041
- Journal Information:
- Journal of Applied Physics, Vol. 117, Issue 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BORON ADDITIONS
CARBON ADDITIONS
CHAOS THEORY
CHROMIUM ALLOYS
COBALT ALLOYS
ERBIUM ALLOYS
EXCHANGE INTERACTIONS
HYSTERESIS
IRON BASE ALLOYS
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
METALLIC GLASSES
MOLYBDENUM ALLOYS
SPIN GLASS STATE
TEMPERATURE DEPENDENCE
TRANSITION TEMPERATURE