The existence of a wide distribution of low energy excess magnetic states due to topological disorder in a magnetic glass is confirmed experimentally for terbium metaphosphate glasses with compositions in the vicinity of (Tb2O3)0.25(P2O5)0.75. A broad peak with a maximum at 7.5K is found in the magnetic contribution to the specific heat; this has its origin in the excess magnetic states. A strong magnetic contribution to the inelastic neutron scattering, isolated by subtraction of the vibrational contribution, arises from a complex of states of higher energies than those responsible for the magnetic contribution to the specific heat.

Low energy excess magnetic states in terbium metaphosphate glass

CARINI, Giuseppe;D'ANGELO, Giovanna;TRIPODO, Gaspare
1999-01-01

Abstract

The existence of a wide distribution of low energy excess magnetic states due to topological disorder in a magnetic glass is confirmed experimentally for terbium metaphosphate glasses with compositions in the vicinity of (Tb2O3)0.25(P2O5)0.75. A broad peak with a maximum at 7.5K is found in the magnetic contribution to the specific heat; this has its origin in the excess magnetic states. A strong magnetic contribution to the inelastic neutron scattering, isolated by subtraction of the vibrational contribution, arises from a complex of states of higher energies than those responsible for the magnetic contribution to the specific heat.
1999
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/1586715
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