Solid-phase reactions of Ta2O5 with Ga2O3 and In2O3 |
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Authors: | S S Plotkin V E Plyushchev |
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Affiliation: | (1) M. V. Lomonosov Moscow Institute of Fine Chemical Technology, USSR |
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Abstract: | Conclusions Using the techniques of DTA and x-ray phase analysis, a study was made of the reactions between Ta2O5 and M2O3 (M = Ga or In), and the phase compositions of the relevant binary systems were determined. The existence was confirmed of stable compounds of composition MTaO4 and eutectoidally decomposing phases containing 7.5–12.5 mole % M2O3. MTaO4 are dielectrics, whose room-temperature v is of the order of 1010 -cm. The temperature dependence of v of MTaO4 was investigated in the range 293–873°K and their energies of activation for conductivity were calculated. The melting points, pyknometric densities, dielectric losses, and relative dielectric permeabilities of MTaO4 were determined.Translated from Poroshkovaya Metallurgiya, No. 2 (110), pp. 69–73, February, 1972. |
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