Solubility of neodymium in copper-rich oxide melts in air and growth of Nd1-xBa2-xCu3Oz solid solution single crystals

被引：26

作者：

Goodilin, E ^{[1
]}

Kambara, M ^{[1
]}

Umeda, T ^{[1
]}

Shiohara, Y ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT MET,GRAD SCH ENGN,BUNKYO KU,TOKYO 113,JAPAN

来源：

PHYSICA C | 1997年 / 289卷 / 1-2期

关键词：

neodymium solid solution; liquidus; single crystals;

D O I：

10.1016/S0921-4534(97)01596-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In the present work temperature dependencies of neodymium solubility in Ba-Cu-O fluxes of different compositions were investigated under the ambient air condition. Small amounts of samples were taken from thermally equilibrated melts in MgO crucibles at 1000-1065 degrees C and the compositions were analyzed by the inductively coupled plasma spectroscopy (ICP) technique. The obtained data were compatible with DTA measurements and results of quenching experiments. The maximum solubility of neodymium in the liquid of about 7 at% achieves in the 'Nd2CuO4-L' field at the highest investigated temperature (1065 degrees C) and for the copper-richest fluxes (Cu:Ba = 6:1). The dissolution enthalpy of the Nd2CuO4 phase in this flux was estimated experimentally to be 115 kJ/mol. Based on the experimental solubility data, single crystals of the Nd1+xBa2+xCu3Oz solid solution (x = 0.43 - 0.85) with non-metallic resistivity behaviour after oxygen annealing were grown by the TSSG method. (C) 1997 Elsevier Science B.V.

引用

页码：37 / 50

页数：14

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