A melt growth process has been carried out on RE-Ba-Cu-O (RE = Y, Gd and Nd) superconductors in order to fabricate grain oriented samples that support a high critical current density (Jc). Preliminary results on the microstructural data obtained on these samples are reported in this paper. © 1996 Chapman &amp; Hall.

Raghavan Gopalan

G. Rangarajan

Critical current density (superconductivity)

CRYSTAL GROWTH FROM MELT

Crystal microstructure

Crystal orientation

Gadolinium compounds

Neodymium compounds

Oxide superconductors

Yttrium compounds

GADOLINIUM BARIUM COPPER OXIDE

NEODYMIUM BARIUM COPPER OXIDE

Yttrium Barium Copper Oxide

High temperature superconductors

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Microstructural investigations on melt grown RE-Ba-Cu-O (RE = Y, Gd and Nd) systems

Journal of Materials Science

The effect of Y2BaCuO5 (211) and silver on the microstructure of melt-grown YBa2Cu3O7-x (123) has been systematically investigated. An optimal amount (28 mol%) of 211 in the starting composition of 123 with 5 wt.% of silver gave critical current densities &gt; 104 A/cm2. Magnetisation measurements using a SQUID magnetometer have been utilised to characterise the superconducting properties of the material at various stages of optimisation. Bean's and Kim's critical-state models are used to analyse the magnetisation of the optimised composition (123 + 28 mol% + 5 wt.% Ag). An anticlockwise tilt observed in the magnetisation curve above 70 K in the optimised sample has been explained as being due to the presence of an additional paramagnetic contribution arising from 211 particles present in the 123 matrix. © 1995.

Physica C: Superconductivity and its applications

Microstructural and magnetisation study in melt-grown YBaCuO samples

Japanese Journal of Applied Physics

Flux Pinning in Melt-Grown $f NdBa_{2}Cu_{3}O_{
inmbi y}$ and $f SmBa_{2}Cu_{3}O_{
inmbi y}$ Superconductors

Physical Review B

Flux pinning byY2BaCuO5precipitates and field- and temperature-driven pinning centers in melt-powder-melt-growth processedYBa2Cu3O7

Journal of Applied Physics

Semisolid solidification of high temperature superconducting oxides

Journal of Materials Research

Diffusion solidification model on Y-system superconductors

Journal	Data powered by TypesetJournal of Materials Science
Publisher	Data powered by TypesetSpringer Netherlands
ISSN	00222461
Open Access	No