Microstructure, grain orientation and trapped field profile of multigrain melt-grown YBaCuO sample

• Published in: Superlattices and microstructures Vol. 21; no. 3; pp. 339 - 345
• Main Authors: Diko, Pavel, Klupsch, Thomas, Sonntag, Insa, Strasser, Thorsten, Habisreuther, Thobias, Gawalek, Wolfgang, Görnert, Peter
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.04.1997; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cuprates superconductors (high tc and insulating parent compounds); Exact sciences and technology; High-Tc compounds; Magnetic properties; melt-grown YBaCuO; microstructure; Physics; Properties of type I and type II superconductors; Superconductivity; Y-based cuprates; microstructure; magnetic properties; melt-grown YBaCuO; Grain boundaries; Inorganic compounds; Transition element compounds; Experimental study; Subgrain; Texture; Weak links; Optical microscopy; Field distribution; High angle boundary; Barium oxides; High-Tc superconductors; Magnetic fields; Microstructure; Copper oxides; Inhomogeneous materials; Yttrium oxides; Magnetic properties
• ISSN: 0749-6036; 1096-3677
• DOI: 10.1006/spmi.1996.0394

The grain orientation and the microstructure of a melt-grown YBaCuO cylindrical pellet was related to the trapped magnetic field profile in the remanant state. Subgrains do not appear as weak links having detrimental influence on the trapped field. Apparently only high angle grain boundaries are weak links separating the peaks of trapped field. The height of the peaks of the axial component of the trapped field measured on the basal surface of the pellet was found to be proportional to the c-axis declination from the normal of the basal surface and to the surface diameter of the grain.