Homogeneity of top-seeded single-grained YBCO superconductors

In-Gann Chen, Gwo Jamn, Jen Chou Hsu

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The homogeneity of Jc(H,T) and microstructure of top-seeded melt-textured (TSMT) YBCO samples has been investigated systematically. A series of ten samples was cut from one single-grain sample at different distances and orientations from the seed. SQUID magnetization measurements of these ten samples have shown that Jc(0 T, 75 K) varied from 1.02 × 104 to 2.49 × 104 A m-2 with an average of 1.80 ± 0.45 × 104 A cm-2. A second TSMT sample was sliced into four single-grained samples parallel to the a-b plane and the distribution of trapped magnetic field mapped for each slice. The sample 3-6 mm below the seed exhibits the largest single peak with the highest trapped field. For samples far away from the seed, very complicate patterns and various field intensities were observed. It is believed that inhomogeneities within the single-grained region of the sample may account for reports that TSMT samples larger than about 3 cm diameter do not exhibit further improvements in their trapped magnetic field and associated levitation force.

Original languageEnglish
Pages (from-to)132-137
Number of pages6
JournalMaterials Science and Engineering B
Volume53
Issue number1-2
DOIs
Publication statusPublished - 1998 May 1

Fingerprint

YBCO superconductors
Superconducting materials
homogeneity
Seed
Magnetic fields
SQUIDs
trapped magnetic fields
Magnetization
seeds
Microstructure
levitation
inhomogeneity

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Chen, In-Gann ; Jamn, Gwo ; Hsu, Jen Chou. / Homogeneity of top-seeded single-grained YBCO superconductors. In: Materials Science and Engineering B. 1998 ; Vol. 53, No. 1-2. pp. 132-137.
@article{d883662875ea4bf9aa78fbb20673c973,
title = "Homogeneity of top-seeded single-grained YBCO superconductors",
abstract = "The homogeneity of Jc(H,T) and microstructure of top-seeded melt-textured (TSMT) YBCO samples has been investigated systematically. A series of ten samples was cut from one single-grain sample at different distances and orientations from the seed. SQUID magnetization measurements of these ten samples have shown that Jc(0 T, 75 K) varied from 1.02 × 104 to 2.49 × 104 A m-2 with an average of 1.80 ± 0.45 × 104 A cm-2. A second TSMT sample was sliced into four single-grained samples parallel to the a-b plane and the distribution of trapped magnetic field mapped for each slice. The sample 3-6 mm below the seed exhibits the largest single peak with the highest trapped field. For samples far away from the seed, very complicate patterns and various field intensities were observed. It is believed that inhomogeneities within the single-grained region of the sample may account for reports that TSMT samples larger than about 3 cm diameter do not exhibit further improvements in their trapped magnetic field and associated levitation force.",
author = "In-Gann Chen and Gwo Jamn and Hsu, {Jen Chou}",
year = "1998",
month = "5",
day = "1",
doi = "10.1016/S0921-5107(97)00315-2",
language = "English",
volume = "53",
pages = "132--137",
journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",
issn = "0921-5107",
publisher = "Elsevier BV",
number = "1-2",

}

Homogeneity of top-seeded single-grained YBCO superconductors. / Chen, In-Gann; Jamn, Gwo; Hsu, Jen Chou.

In: Materials Science and Engineering B, Vol. 53, No. 1-2, 01.05.1998, p. 132-137.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Homogeneity of top-seeded single-grained YBCO superconductors

AU - Chen, In-Gann

AU - Jamn, Gwo

AU - Hsu, Jen Chou

PY - 1998/5/1

Y1 - 1998/5/1

N2 - The homogeneity of Jc(H,T) and microstructure of top-seeded melt-textured (TSMT) YBCO samples has been investigated systematically. A series of ten samples was cut from one single-grain sample at different distances and orientations from the seed. SQUID magnetization measurements of these ten samples have shown that Jc(0 T, 75 K) varied from 1.02 × 104 to 2.49 × 104 A m-2 with an average of 1.80 ± 0.45 × 104 A cm-2. A second TSMT sample was sliced into four single-grained samples parallel to the a-b plane and the distribution of trapped magnetic field mapped for each slice. The sample 3-6 mm below the seed exhibits the largest single peak with the highest trapped field. For samples far away from the seed, very complicate patterns and various field intensities were observed. It is believed that inhomogeneities within the single-grained region of the sample may account for reports that TSMT samples larger than about 3 cm diameter do not exhibit further improvements in their trapped magnetic field and associated levitation force.

AB - The homogeneity of Jc(H,T) and microstructure of top-seeded melt-textured (TSMT) YBCO samples has been investigated systematically. A series of ten samples was cut from one single-grain sample at different distances and orientations from the seed. SQUID magnetization measurements of these ten samples have shown that Jc(0 T, 75 K) varied from 1.02 × 104 to 2.49 × 104 A m-2 with an average of 1.80 ± 0.45 × 104 A cm-2. A second TSMT sample was sliced into four single-grained samples parallel to the a-b plane and the distribution of trapped magnetic field mapped for each slice. The sample 3-6 mm below the seed exhibits the largest single peak with the highest trapped field. For samples far away from the seed, very complicate patterns and various field intensities were observed. It is believed that inhomogeneities within the single-grained region of the sample may account for reports that TSMT samples larger than about 3 cm diameter do not exhibit further improvements in their trapped magnetic field and associated levitation force.

UR - http://www.scopus.com/inward/record.url?scp=0000548470&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000548470&partnerID=8YFLogxK

U2 - 10.1016/S0921-5107(97)00315-2

DO - 10.1016/S0921-5107(97)00315-2

M3 - Article

VL - 53

SP - 132

EP - 137

JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

SN - 0921-5107

IS - 1-2

ER -