INVESTIGADORES
SERQUIS Adriana Cristina
artículos
Título:
Defect structures in MgB2 wires
Autor/es:
X. Z. LIAO; A SERQUIS; Y. T. ZHU; L. CIVALE; D. L. HAMMON; D. E. PETERSON; F. M. MUELLER; V. F. NESTERENKO; Y. GU
Revista:
SUPERCONDUCTOR SCIENCE AND TECHNOLOGY
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: UK; Año: 2003 vol. 16 p. 799 - 803
ISSN:
0953-2048
Resumen:
The microstructures of MgB2 wires prepared by the powder-in tube technique and subsequent hot isostatic pressing were investigated using transmission electron microscopy. A large amount of crystalline defects including small-angle twisting, tilting and bending boundaries, in which high densities of dislocations reside, was found forming sub-grains within MgB2 grains. It is believed that these defects resulted from particle deformation during the hot isostatic pressing process and are effective flux pinning centres that contribute to the high critical current densities of the wires at hightemperatures and at high fields.
