Abstract
The effect of low-temperature annealing on the magnetization curve of YBa2Cu3O6 + x ceramics in the superconducting state (x ≈ 0.9) is investigated. When the annealing time is fairly long, the field dependence of magnetic moment M exhibits a feature in the form of a plateau, where the value of M remains almost constant. The evolution of this feature in the magnetization curves of annealed samples with annealing time and temperature is studied. It is assumed that low-temperature annealing gives rise to metastable ferromagnetic clusters in YBa2Cu3O6 + x ceramics, the contribution of which to the magnetic moment accounts for the feature in the magnetization curves of the annealed samples.
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Original Russian Text © M.K. Aliev, G.R. Alimov, R.R. Vil’danov, B. Yu. Sokolov, 2007, published in Zhurnal Tekhnicheskoĭ Fiziki, 2007, Vol. 77, No. 9, pp. 44–47.
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Aliev, M.K., Alimov, G.R., Vil’danov, R.R. et al. Effect of low-temperature annealing on the magnetization curve of YBa2Cu3O6 + x ceramics. Tech. Phys. 52, 1144–1147 (2007). https://doi.org/10.1134/S106378420709006X
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DOI: https://doi.org/10.1134/S106378420709006X