Synthesis, structural aspects and superconductivity of La1-xRExBaCaCu3O7 with RE=Nd, Dy, Sm and Pr

Singh R.; Awana VPS.; Horvat J.; Dou SX.; Narlikar AV.

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Synthesis, structural aspects and superconductivity of La1-xRExBaCaCu3O7 with RE=Nd, Dy, Sm and Pr

机译：RE = Nd，Dy，Sm和Pr的La1-xRExBaCaCu3O7的合成，结构特征和超导性

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We have investigated the structural aspects and superconductivity of La1-xRExBaCaCu3O7 system in detail, with the help of X-ray diffraction and magnetic susceptibility studies. While a complete substitution of Nd and Pr takes place isostructurally in La:1113 (LaBaCaCu3O7) compound, for Dy and Sm, both are only partial, namely, it is 50 at.% for the former and 75 at.% for later. Unlike the RE:123 system, in the presently studied RE:1113 compound, the phase formation and onset T-c an both strongly dependent on the chosen rare earth (RE). Pr has a less deleterious effect on the superconductivity of La:1113 system than that reported for La:123. These results of phase formation and the different T-c values for various rare earths are discussed on the basis of interesting structural chemistry of this compound, which involves the intermixing of RE, Ba and Ca sites in RE:1113 compounds. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 22]

机译：我们借助X射线衍射和磁化率研究，详细研究了La1-xRExBaCaCu3O7系统的结构方面和超导性。 Nd和Pr的完全取代在La：1113（LaBaCaCu3O7）化合物中以等结构发生，但Dy和Sm都只是部分取代，即前者为50 at。％，后者为75 at。％。与RE：123系统不同，在目前研究的RE：1113化合物中，相的形成和起始T-c都强烈依赖于所选的稀土（RE）。 Pr对La：1113系统的超导性的有害影响小于对La：123的报道。在该化合物有趣的结构化学的基础上，讨论了这些相形成的结果以及各种稀土元素的不同T-c值，其中涉及RE：1113化合物中RE，Ba和Ca位点的混合。（C）1998 Elsevier Science B.V.保留所有权利。 [参考：22]

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《Physica, C. Superconductivity and its applications》 |1998年第2期|共7页
作者
Singh R.; Awana VPS.; Horvat J.; Dou SX.; Narlikar AV.;
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正文语种 eng
中图分类超导电性;
关键词
La1-xrexbacacu3o7; Structural aspects; Superconductivity;

机译：La1-xrexbacacu3o7;结构方面;超导;

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1. Synthesis, structural aspects and superconductivity of La1-xRExBaCaCu3O7 with RE=Nd, Dy, Sm and Pr [J] . Singh R., Awana VPS., Horvat J., Physica, C. Superconductivity and its applications . 1998,第1a2期

机译：RE = Nd，Dy，Sm和Pr的La1-xRExBaCaCu3O7的合成，结构特征和超导性
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Synthesis, structural aspects and superconductivity of La1-xRExBaCaCu3O7 with RE=Nd, Dy, Sm and Pr

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