| 摘要 |
PURPOSE:To manufacture an amorphous Te-V compound material having a specified composition which is useful as a magnetic material etc. by heating and melting a mixture of TeO2 and V2O5, and subjecting the melt to extremely rapid cooling. CONSTITUTION:A mixture of TeO2 and V2O5 having a specified composition is packed in a tube 7 for heating a starting material, heated by a coil 5 for dielectric heating at a temp. which is 50-200 deg.C higher than the m.p. of said mixture, and melted. The melt is spouted by gas pressure to the surface of a roll 13 for rapid cooling revolving at a peripheral speed of 5-35m/sec from the blowhole of a nozzle 11 for spouting molten material, provided to said tube 7 and having slit- shaped, circular, or elliptic form. said melt is cooled at an ultrahigh cooling rate of 10<4>-10<6> deg.C/sec, and the amorphous Te-V compound material, having the composition of (TeO2)1-x.(V2O5)x (where 0.90>=x>0), is obtained. Said material is subjected to heat treatment below its crystallization temp. for a specified time, and the oriented polycrystalline thin film material which is useful as an optical storage material, etc. can be obtained.
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