M.Sc. Tezi Görüntüleme

Student:	İmren DEMİR
Supervisor:	Prof. Ekrem YANMAZ
Department:	Fizik
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University Turkey

Title of the Thesis:	Investigation of Magnetic Levitation Force Properties of Mgb2 Superconductors Which Are Prepared By Carbon Doped And Undoped Nano Boron
Level:	M.Sc.
Acceptance Date:	16/10/2014
Number of Pages:	61
Registration Number:	i2842

Summary:

C-doped and undoped nano boron MgB2 superconductors were prepared by "Hot Press" plus 'Solid State Reaction Method" from magnesium (%99.8), nano boron (>%98) and carbon doped nano boron (%98) powders. Structural analyses of all samples were characterized by X-ray diffraction (XRD). Electrical (R-T) measurements were carried out by a close cycle cryostat using "Four Probe Method". The values of critical temperature were determined by R-T measurements. The magnetic levitation force measurements of the samples were carried out by using the "Magnetic Levitation Force Measurement System (MLFMS)", designed by Sukru Celik and financially supported by TUBITAK.

As a result, C-doped nano boron or undoped samples indicated the presence of the magnetic levitation force. In addition, C-doped samples showed mostly repulsive force unless the undoped samples determined to be attractive force. This condition; one can fabricate superconductor material which show repulsive or attractive character using the C-doped or undoped nano boron powders.

Key Words: MgB2, Magnetic Levitation Force, Hot Press