Solubility limit and crystallization of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The phase relation and crystallization behavior were investigated in a series of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ (-0.1 ≤ x ≤ 0.3). The single phase rare earth (RE)-Ba substitution window (RE: Sm and Eu) was found to range from 0 to 0.3 when quenched from 1010 °C for nominal substitution parameter, x ≤ 0.05, from 990 °C for x = 0.1 and 0.2, and from 970 °C for x = 0.3 under ambient atmosphere. Onset Tc values were 94 K for x ≤ 0 and fell sharply with increasing x. After Ar post-annealing (ArPA), the countersubstitution of RE by Ba was observed associated with a slight improvement of onset Tc (0.5 K). A dramatic enhancement of onset Tc for the sample with RE rich composition (x > 0) was observed with ArPA. It was also found that crystallization rate was large for the compositions with x ≤ 0 while small for x > 0.

Original languageEnglish
Pages (from-to)19-26
Number of pages8
JournalPhysica C: Superconductivity and its Applications
Volume371
Issue number1
DOIs
Publication statusPublished - 2002 Jun 1
Externally publishedYes

Fingerprint

Crystallization
Rare earths
rare earth elements
solubility
Solubility
crystallization
Substitution reactions
Annealing
substitutes
annealing
Chemical analysis
atmospheres
augmentation

Keywords

  • Ar post-annealing
  • Crystallization
  • Solid solubility limit

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Solubility limit and crystallization of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ. / Hu, A.; Sakai, Naomichi; Murakami, Masato.

In: Physica C: Superconductivity and its Applications, Vol. 371, No. 1, 01.06.2002, p. 19-26.

Research output: Contribution to journalArticle

@article{cf34d1c3c377418fb21027eecc450366,
title = "Solubility limit and crystallization of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ",
abstract = "The phase relation and crystallization behavior were investigated in a series of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ (-0.1 ≤ x ≤ 0.3). The single phase rare earth (RE)-Ba substitution window (RE: Sm and Eu) was found to range from 0 to 0.3 when quenched from 1010 °C for nominal substitution parameter, x ≤ 0.05, from 990 °C for x = 0.1 and 0.2, and from 970 °C for x = 0.3 under ambient atmosphere. Onset Tc values were 94 K for x ≤ 0 and fell sharply with increasing x. After Ar post-annealing (ArPA), the countersubstitution of RE by Ba was observed associated with a slight improvement of onset Tc (0.5 K). A dramatic enhancement of onset Tc for the sample with RE rich composition (x > 0) was observed with ArPA. It was also found that crystallization rate was large for the compositions with x ≤ 0 while small for x > 0.",
keywords = "Ar post-annealing, Crystallization, Solid solubility limit",
author = "A. Hu and Naomichi Sakai and Masato Murakami",
year = "2002",
month = "6",
day = "1",
doi = "10.1016/S0921-4534(01)01063-2",
language = "English",
volume = "371",
pages = "19--26",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - Solubility limit and crystallization of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ

AU - Hu, A.

AU - Sakai, Naomichi

AU - Murakami, Masato

PY - 2002/6/1

Y1 - 2002/6/1

N2 - The phase relation and crystallization behavior were investigated in a series of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ (-0.1 ≤ x ≤ 0.3). The single phase rare earth (RE)-Ba substitution window (RE: Sm and Eu) was found to range from 0 to 0.3 when quenched from 1010 °C for nominal substitution parameter, x ≤ 0.05, from 990 °C for x = 0.1 and 0.2, and from 970 °C for x = 0.3 under ambient atmosphere. Onset Tc values were 94 K for x ≤ 0 and fell sharply with increasing x. After Ar post-annealing (ArPA), the countersubstitution of RE by Ba was observed associated with a slight improvement of onset Tc (0.5 K). A dramatic enhancement of onset Tc for the sample with RE rich composition (x > 0) was observed with ArPA. It was also found that crystallization rate was large for the compositions with x ≤ 0 while small for x > 0.

AB - The phase relation and crystallization behavior were investigated in a series of (Sm0.5Eu0.5)1+xBa2-xCu3O 7-δ (-0.1 ≤ x ≤ 0.3). The single phase rare earth (RE)-Ba substitution window (RE: Sm and Eu) was found to range from 0 to 0.3 when quenched from 1010 °C for nominal substitution parameter, x ≤ 0.05, from 990 °C for x = 0.1 and 0.2, and from 970 °C for x = 0.3 under ambient atmosphere. Onset Tc values were 94 K for x ≤ 0 and fell sharply with increasing x. After Ar post-annealing (ArPA), the countersubstitution of RE by Ba was observed associated with a slight improvement of onset Tc (0.5 K). A dramatic enhancement of onset Tc for the sample with RE rich composition (x > 0) was observed with ArPA. It was also found that crystallization rate was large for the compositions with x ≤ 0 while small for x > 0.

KW - Ar post-annealing

KW - Crystallization

KW - Solid solubility limit

UR - http://www.scopus.com/inward/record.url?scp=0036603903&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036603903&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(01)01063-2

DO - 10.1016/S0921-4534(01)01063-2

M3 - Article

VL - 371

SP - 19

EP - 26

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 1

ER -