Blocky and spheroidal growth in Y1.5Ba2Cu3Ox system |
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| Authors: | P Diko M ?ef?iková K Zmorayová M Kalmanová D Volochová S Piovar?i |
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| Institution: | Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia |
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| Abstract: | Solidification of Y1.5Ba2Cu3Ox system was studied with the aim to find the temperature of self-nucleation. The microstructure after cooling from isothermal dwells in the temperature range 984–995 °C was analysed. It is shown that blocky YBa2Cu3O7?δ crystals were self-nucleated and grown during isothermal dwells below 988 °C and spheroidal multicrystals were formed during cooling from isothermal dwells at higher temperatures. The symmetrical and radial YBa2Cu3O7?δ crystal branches of spheroids grow in the 〈110〉 crystal direction. |
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