Synthesis of the Ba-substituted Bi-2212 phase of BiPb(Sr, Ba)2RECu2O8

Synthesis of the Ba-substituted Bi-2212 phase of BiPb(Sr, Ba)2RECu2O8
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BiPb(Sr, Ba)2RECu2O8 Ba 取代 Bi-2212 相的合成

DOI:
10.35848/1347-4065/ab8603
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发表时间:
2020
影响因子:
1.5
通讯作者:
M. Kato
M. Kato
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Tomoaki Watanabe;K. Nakagawa;Chiaki Sugimoto;K. Takano;Ryohei Ito;T. Kawamata;T. Noji;M. Kato

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我们尝试通过传统的固相反应方法合成BiPbSr2−xBaxRECu2O8+δ (RE = Nd, Sm, Gd, Y, Yb)的Bi-2212相。仅针对 Nd 成功合成了 x = 1 的完全 Ba 取代的样品。随着稀土离子半径的减小,Ba 的溶解度极限也随之减小。研究发现,用 Ba 替代 Sr 需要 Bi-O 和 RE 层的膨胀以及在还原气氛中的合成,以抑制 BaBiO3 相关相的形成。遗憾的是,半导体BaPbBa2NdCu2O8+δ的空穴掺杂尚未成功。
We have attempted to synthesize the Bi-2212 phase of BiPbSr2−xBaxRECu2O8+δ (RE = Nd, Sm, Gd, Y, Yb) by the conventional solid-state reaction method. The completely Ba-substituted sample with x = 1 has been successfully synthesized only for Nd. As the ionic radius of RE decreases, the solubility limit of Ba decreases. It has been found that the substitution of Ba for Sr requires the expansion of both the Bi–O and RE layers as well as the synthesis in a reducing atmosphere to suppress the formation of BaBiO3-related phases. Unfortunately, the hole-doping to semiconducting BaPbBa2NdCu2O8+δ has not been successful.
富铋Bi-2212单晶的输运特性(II)
DOI: --
发表时间: 2018
期刊:
影响因子: --
作者:
川村圭輔;山口隼平;佐々木菜絵;藤井武則;木村尚次郎;谷口晴香;中西良樹;吉澤正人;三宅厚志;金道浩一;渡辺孝夫
通讯作者: 渡辺孝夫