Damage processes and magnetic field orientation in ferrimagnetic oxides Y/sub 3/Fe/sub 5/O/sub 12/ and BaFe/sub 12/O/sub 19/ irradiated by high-energy heavy ions: A Moessbauer study
Moessbauer spectroscopy of damage induced by energetic Ar, Kr, and Xe ions in the giga-electron-volt range in two ferrimagnetic oxides, Y/sub 3/Fe/sub 5/O/sub 12/ and BaFe/sub 12/O/sub 19/, is presented. The enhancement of the paramagnetic phase observed after an irradiation with high-energy deposition (Xe and Kr ions) compared to low-energy deposition (Ar ions) supports a damage mechanism based on the electronic stopping power. Threshold energy-deposition values close to 17 and 25 MeV cm/sup 2/ mg/sup -1/ have thus been determined for Y/sub 3/Fe/sub 5/O/sub 12/ and BaFe/sub 12/O/sub 19/, respectively. Furthermore, drastic changes in the bulk orientation of the hyperfine magnetic field H/sub f/ have been observed in yttrium iron garnet: The H/sub f/ distribution is isotropic for Ar irradiations and anisotropic for Xe irradiations, while two types of H/sub f/ distributions are observed for Kr irradiations, depending on the values of the deposited energy compared to that of the threshold energy. Comparison with latent-track models is performed.
- Research Organization:
- Centre Interdisciplinaire de Recherches avec les Ions Lourds (CIRIL), Boite Postale 5133, 14040 Caen Cedex, France
- OSTI ID:
- 6615113
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Vol. 35:13
- Country of Publication:
- United States
- Language:
- English
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BARIUM OXIDES
PHYSICAL RADIATION EFFECTS
FERRITE GARNETS
YTTRIUM OXIDES
ARGON IONS
FERRIMAGNETIC MATERIALS
GEV RANGE 01-10
KRYPTON IONS
MAGNETIC PROPERTIES
MOESSBAUER EFFECT
STOPPING POWER
XENON IONS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
ENERGY RANGE
GEV RANGE
IONS
MAGNETIC MATERIALS
MATERIALS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATION EFFECTS
SILICATE MINERALS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360603* - Materials- Properties