Relaxation of the Irreversible Magnetization in Proton-Irradiated MgB2

The paper presents the features of the magnetization decay of proton-irradiated MgB 2 bulk samples. Irradiation was performed with protons of energies between 8.6 and 15.07 MeV at different fluences. The creep activation energy is sensitive to the ratio between proton range and sample thickness. Exp...

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Bibliographic Details
Published in:Journal of superconductivity and novel magnetism 2025, Vol.38 (1)
Main Authors: Sandu, Viorel, Craciun, Liviu, Ivan, Ion, Ionescu, Alina Marinela Badea, Chidthong, Rungtiwa, Mihai, Felicia, Aldica, Gheorghe V.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Condensed Matter Physics
Magnetic Materials
Magnetism
Physics
Physics and Astronomy
Strongly Correlated Systems
Superconductivity
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Summary:The paper presents the features of the magnetization decay of proton-irradiated MgB 2 bulk samples. Irradiation was performed with protons of energies between 8.6 and 15.07 MeV at different fluences. The creep activation energy is sensitive to the ratio between proton range and sample thickness. Experimental data show that the creep exponents are different from the theoretical predictions. When the proton range is shorter than the sample thickness (protons of 8.6 MeV), the thermomagnetic instabilities are strongly emphasized and affect the creep behavior.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-024-06877-5