Czochralski growth of LaPd2Al2 single crystals

被引：5

作者：

Dolezal, P. ^{[1
]}

Rudajevova, A. ^{[1
]}

Vlaskova, K. ^{[1
]}

Kriegner, D. ^{[1
]}

Vaclavova, K. ^{[2
]}

Prchal, J. ^{[1
]}

Javorsky, P. ^{[1
]}

机构：

[1] Charles Univ Prague, Dept Condensed Matter Phys, Fac Math & Phys, Ke Karlovu 5, Prague 12116 2, Czech Republic

[2] Charles Univ Prague, Dept Phys Mat, Fac Math & Phys, Ke Karlovu 5, Prague 12116 2, Czech Republic

来源：

JOURNAL OF CRYSTAL GROWTH | 2017年 / 475卷

关键词：

LaPd2Al2; Unconventional superconductivity; Differential scanning calorimetry (DSC); Czochralski method; X-ray diffraction; Single crystal growth;

D O I：

10.1016/j.jcrysgro.2017.05.016

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The present study is focused on the preparation of single crystalline LaPd2Al2 by the Czochralski method. Differential scanning calorimetry (DSC) and energy dispersive X-ray spectroscopy (EDX) analyses reveal that LaPd2Al2 is an incongruently melting phase which causes difficulties for the preparation of single crystalline LaPd2Al2 by the Czochralski method. Therefore several non-stoichiometric polycrystalline samples were studied for its preparation. Finally the successful growth of LaPd2Al2 without foreign phases has been achieved by using a non-stoichiometric precursor with atomic composition 22:39: 9 (La:Pd:Al). X-ray powder diffraction, EDX analysis and DSC were used for the characterisation. A single crystalline sample was separated from the ingot prepared by the Czochralski method using the non-stoichiometric precursor. The presented procedure for the preparation of pure single phase LaPd2Al2 could be modified for other incongruently melting phases. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：10 / 20

页数：11

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