Affiliation:
1. Samarkand State University named after Sharof Rashidov, Institute of Engineering Physics
2. Institute of Nuclear Physics of Academy of Sciences of Republic of Uzbekistan
Abstract
The paper presents the results of investigations of the magnetic properties of glasses of the composition
K2O · Al2O3 · B2O3 (KAB) with the addition of Fe2O3 2.0 and 3.0 wt.subjected to radiation treatment
in 60∘C gamma field at dose rate of 236 R/s for 2 hours at room temperature and when samples are
heated to 423 K. Both under radiation and thermoradiation exposure, the magnetic susceptibility of glasses
follows the Curie–Weiss law at 4.2–200 K and slightly deviates from this dependence at 200–340 K. The
weakly pronounced magnetic hysteresis with low coercive force was detected at low temperatures against the
background of magnetization that depends almost linearly on the field. An analysis of data on the temperature
and field dependences of magnetization in weak and strong fields, combined with data on structural and
optical properties, indicates that mainly Fe2O3 nanoparticles in the uncompensated antiferromagnetic state
are formed in glasses, as well as an insignificant amount of dissociated Fe and Fe3O4 ions.
Subject
Space and Planetary Science,General Physics and Astronomy,Astronomy and Astrophysics
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