Please use this identifier to cite or link to this item: http://repository.aaup.edu/jspui/handle/123456789/1102
Title: Temperature and magnetic field effects on the carrier density and Hall mobility of boron-doped Tl-Ba-Ca-Cu-O superconductor
Authors: A. F Qasrawi
Keywords: JOURNAL OF ALLOYS AND COMPOUNDS
Issue Date: Oct-2005
Publisher: JOURNAL OF ALLOYS AND COMPOUNDS
Citation: Volume 402, Issues 1–2, 27 October 2005, Pages 5-11
Abstract: Boron-doped T1-based superconductor was prepared by adding an amount of 1 wt.% B to the Tl1.8Ba2Ca2.2Cu3Ox, compound. The usual solid-state reaction method has been applied under optimum conditions. The X-ray data of the sample show a tetragonal structure with a high ratio of T1-2223 superconducting phase. The sample showed a transition at 125 K and the zero resistance was observed at 120 K. The magnetic field and temperature effects on the normal state electrical resistivity, carrier density, and Hall mobility have been investigated. Both temperature and magnetic field significantly affect the resistivity behavior. The zero field resistivity was found to vary exponentially with temperature with a slope revealing activation energy of 27.5 meV. When the magnetic field is applied, the resistivity varied up-normally in the temperature region of 160-240 K. The temperature dependent carrier concentration calculated from the Hall coefficient data varied linearly with the applied magnetic field. This effect was attributed to the increase in the hole effective mass upon field increment. The temperature-dependent carrier concentration data at several applied fields were analyzed by the single donor-single acceptor model to obtain the values of effective masses. The temperature and magnetic field dependent normal state Hall mobility was found to be limited by the scattering of acoustic phonons. (c) 2005 Elsevier B.V. All rights reserved.
URI: http://repository.aaup.edu/jspui/handle/123456789/1102
ISSN: https://doi.org/10.1016/j.jallcom.2005.04.148
Appears in Collections:Faculty & Staff Scientific Research publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Admin Tools