Effects of high-pressure annealing on critical current density in 1 2 2 type iron pnictide wires

Sunseng Pyon; Yuji Tsuchiya; Hiroshi Inoue; Norikiyo Koizumi; Hideki Kajitani; Tsuyoshi Tamegai

doi:10.1016/j.physc.2014.03.008

Effects of high-pressure annealing on critical current density in 1 2 2 type iron pnictide wires

Sunseng Pyon, Yuji Tsuchiya, Hiroshi Inoue, Norikiyo Koizumi, Hideki Kajitani, Tsuyoshi Tamegai

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We have fabricated (Ba,K)Fe₂As₂ and (Sr,K)Fe ₂As₂ superconducting wires through an powder-in-tube (PIT) method using hot isostatic pressing (HIP) technique. The transport critical current densities (J_c) have reached 37 kA/cm² and 48 kA/cm² under self-field, and 3.0 kA/cm² and 1.8 kA/cm ² under magnetic field of 90 kOe, at 4.2 K in the (Ba,K)Fe ₂As₂ and (Sr,K)Fe₂As₂ wire, respectively. Magneto-optical (MO) imaging of the wires confirmed the large intergranular J_c in the wire core due to the improvement of couplings between superconducting grains by high-pressure annealing.

Original language	English
Pages (from-to)	69-72
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	504
DOIs	https://doi.org/10.1016/j.physc.2014.03.008
Publication status	Published - 2014 Sept 15
Externally published	Yes

Keywords

Critical current density
Hot isostatic pressing (HIP)
Magneto-optical imaging
Powder-in-tube (PIT)
Superconducting wires

ASJC Scopus subject areas

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

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10.1016/j.physc.2014.03.008

Cite this

@article{67f47eae5d064f22b39da14a0562fb73,

title = "Effects of high-pressure annealing on critical current density in 1 2 2 type iron pnictide wires",

abstract = "We have fabricated (Ba,K)Fe2As2 and (Sr,K)Fe 2As2 superconducting wires through an powder-in-tube (PIT) method using hot isostatic pressing (HIP) technique. The transport critical current densities (Jc) have reached 37 kA/cm2 and 48 kA/cm2 under self-field, and 3.0 kA/cm2 and 1.8 kA/cm 2 under magnetic field of 90 kOe, at 4.2 K in the (Ba,K)Fe 2As2 and (Sr,K)Fe2As2 wire, respectively. Magneto-optical (MO) imaging of the wires confirmed the large intergranular Jc in the wire core due to the improvement of couplings between superconducting grains by high-pressure annealing.",

keywords = "Critical current density, Hot isostatic pressing (HIP), Magneto-optical imaging, Powder-in-tube (PIT), Superconducting wires",

author = "Sunseng Pyon and Yuji Tsuchiya and Hiroshi Inoue and Norikiyo Koizumi and Hideki Kajitani and Tsuyoshi Tamegai",

note = "Funding Information: This work was partially supported by a Grant-in-Aid for Young Scientists (B) (No. 24740238) and the Japan-China Bilateral Joint Research Project by the Japan Society for the Promotion of Science (JSPS).",

year = "2014",

month = sep,

day = "15",

doi = "10.1016/j.physc.2014.03.008",

language = "English",

volume = "504",

pages = "69--72",

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

issn = "0921-4534",

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TY - JOUR

T1 - Effects of high-pressure annealing on critical current density in 1 2 2 type iron pnictide wires

AU - Pyon, Sunseng

AU - Tsuchiya, Yuji

AU - Inoue, Hiroshi

AU - Koizumi, Norikiyo

AU - Kajitani, Hideki

AU - Tamegai, Tsuyoshi

N1 - Funding Information: This work was partially supported by a Grant-in-Aid for Young Scientists (B) (No. 24740238) and the Japan-China Bilateral Joint Research Project by the Japan Society for the Promotion of Science (JSPS).

PY - 2014/9/15

Y1 - 2014/9/15

N2 - We have fabricated (Ba,K)Fe2As2 and (Sr,K)Fe 2As2 superconducting wires through an powder-in-tube (PIT) method using hot isostatic pressing (HIP) technique. The transport critical current densities (Jc) have reached 37 kA/cm2 and 48 kA/cm2 under self-field, and 3.0 kA/cm2 and 1.8 kA/cm 2 under magnetic field of 90 kOe, at 4.2 K in the (Ba,K)Fe 2As2 and (Sr,K)Fe2As2 wire, respectively. Magneto-optical (MO) imaging of the wires confirmed the large intergranular Jc in the wire core due to the improvement of couplings between superconducting grains by high-pressure annealing.

AB - We have fabricated (Ba,K)Fe2As2 and (Sr,K)Fe 2As2 superconducting wires through an powder-in-tube (PIT) method using hot isostatic pressing (HIP) technique. The transport critical current densities (Jc) have reached 37 kA/cm2 and 48 kA/cm2 under self-field, and 3.0 kA/cm2 and 1.8 kA/cm 2 under magnetic field of 90 kOe, at 4.2 K in the (Ba,K)Fe 2As2 and (Sr,K)Fe2As2 wire, respectively. Magneto-optical (MO) imaging of the wires confirmed the large intergranular Jc in the wire core due to the improvement of couplings between superconducting grains by high-pressure annealing.

KW - Critical current density

KW - Hot isostatic pressing (HIP)

KW - Magneto-optical imaging

KW - Powder-in-tube (PIT)

KW - Superconducting wires

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U2 - 10.1016/j.physc.2014.03.008

DO - 10.1016/j.physc.2014.03.008

M3 - Article

AN - SCOPUS:84905277995

SN - 0921-4534

VL - 504

SP - 69

EP - 72

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

ER -

Effects of high-pressure annealing on critical current density in 1 2 2 type iron pnictide wires

Abstract

Keywords

ASJC Scopus subject areas

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