Microstructures and superconducting properties of single domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ superconductors fabricated in air

A. Hu; N. Sakai; K. Ogasawara; M. Murakami

doi:10.1016/S0921-4534(01)00885-1

Microstructures and superconducting properties of single domain (Sm_0.5,Eu_0.5)Ba₂Cu₃ O_7-δ superconductors fabricated in air

A. Hu, N. Sakai, K. Ogasawara, M. Murakami

Research output: Contribution to journal › Article

21 Citations (Scopus)

Abstract

Single-domain (Sm_0.5,Eu_0.5)Ba₂Cu₃ O_7-δ grains were obtained via modified melt processing in air using NdBa₂Cu₃O_7-δ seeds. The facet growth front was observed in the a/b growth direction and the stepwise growth front in the c growth direction. A series of crystal defects: dislocations, twin boundaries and local chemical variations between rare earth and Ba were revealed by transmission electron microscopy and energy dispersive spectrum analysis. In addition, a slightly higher concentration of Sm than Eu was revealed in the matrix. A high T_c value up to 94.5 K and enhanced J_c values over a wide field range at 77 K were obtained after Ar post-annealing. A pellet of diameter 16 mm trapped 0.45 T field at 77 K.

Original language	English
Pages (from-to)	157-163
Number of pages	7
Journal	Physica C: Superconductivity and its applications
Volume	366
Issue number	3
DOIs	https://doi.org/10.1016/S0921-4534(01)00885-1
Publication status	Published - 2002 Jan 15

Fingerprint

Keywords

(Sm,Eu)BaCu O
Melt processing
Microstructure defect
Superconducting properties

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Cite this

Hu, A., Sakai, N., Ogasawara, K., & Murakami, M. (2002). Microstructures and superconducting properties of single domain (Sm_0.5,Eu_0.5)Ba₂Cu₃ O_7-δ superconductors fabricated in air. Physica C: Superconductivity and its applications, 366(3), 157-163. https://doi.org/10.1016/S0921-4534(01)00885-1

@article{f44d6578d8a14cf0b1e690a075c88c3e,

title = "Microstructures and superconducting properties of single domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ superconductors fabricated in air",

abstract = "Single-domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ grains were obtained via modified melt processing in air using NdBa2Cu3O7-δ seeds. The facet growth front was observed in the a/b growth direction and the stepwise growth front in the c growth direction. A series of crystal defects: dislocations, twin boundaries and local chemical variations between rare earth and Ba were revealed by transmission electron microscopy and energy dispersive spectrum analysis. In addition, a slightly higher concentration of Sm than Eu was revealed in the matrix. A high Tc value up to 94.5 K and enhanced Jc values over a wide field range at 77 K were obtained after Ar post-annealing. A pellet of diameter 16 mm trapped 0.45 T field at 77 K.",

keywords = "(Sm,Eu)BaCu O, Melt processing, Microstructure defect, Superconducting properties",

author = "A. Hu and N. Sakai and K. Ogasawara and M. Murakami",

year = "2002",

month = jan

day = "15",

doi = "10.1016/S0921-4534(01)00885-1",

language = "English",

volume = "366",

pages = "157--163",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - Microstructures and superconducting properties of single domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ superconductors fabricated in air

AU - Hu, A.

AU - Sakai, N.

AU - Ogasawara, K.

AU - Murakami, M.

PY - 2002/1/15

Y1 - 2002/1/15

N2 - Single-domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ grains were obtained via modified melt processing in air using NdBa2Cu3O7-δ seeds. The facet growth front was observed in the a/b growth direction and the stepwise growth front in the c growth direction. A series of crystal defects: dislocations, twin boundaries and local chemical variations between rare earth and Ba were revealed by transmission electron microscopy and energy dispersive spectrum analysis. In addition, a slightly higher concentration of Sm than Eu was revealed in the matrix. A high Tc value up to 94.5 K and enhanced Jc values over a wide field range at 77 K were obtained after Ar post-annealing. A pellet of diameter 16 mm trapped 0.45 T field at 77 K.

AB - Single-domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ grains were obtained via modified melt processing in air using NdBa2Cu3O7-δ seeds. The facet growth front was observed in the a/b growth direction and the stepwise growth front in the c growth direction. A series of crystal defects: dislocations, twin boundaries and local chemical variations between rare earth and Ba were revealed by transmission electron microscopy and energy dispersive spectrum analysis. In addition, a slightly higher concentration of Sm than Eu was revealed in the matrix. A high Tc value up to 94.5 K and enhanced Jc values over a wide field range at 77 K were obtained after Ar post-annealing. A pellet of diameter 16 mm trapped 0.45 T field at 77 K.

KW - (Sm,Eu)BaCu O

KW - Melt processing

KW - Microstructure defect

KW - Superconducting properties

UR - http://www.scopus.com/inward/record.url?scp=0037079756&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037079756&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(01)00885-1

DO - 10.1016/S0921-4534(01)00885-1

M3 - Article

AN - SCOPUS:0037079756

VL - 366

SP - 157

EP - 163

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 3

ER -

Access to Document

10.1016/S0921-4534(01)00885-1