Articles liés à Pinning Disorders in MgB2: Effects of Pinning Disorder...

Pinning Disorders in MgB2: Effects of Pinning Disorder on Multiband Transport Properties of Superconducting Magnesium Diboride - Couverture souple

Kaushik, Som Datta

 
9783639364224: Pinning Disorders in MgB2: Effects of Pinning Disorder on Multiband Transport Properties of Superconducting Magnesium Diboride
Couverture souple
ISBN 10 : 3639364228 ISBN 13 : 9783639364224
Editeur : VDM Verlag Dr. Müller, 2011

Synopsis

Present work on superconducting multiband MgB2 was started to sort out some relevant question such as how does the band scattering mechanism behaves with density and type of extrinsic defects, How does the pinning force constant in the intergrain and intragrain regions compare with other low Tc and high Tc superconductors? With the introduction of defects, is there some reflection of the changing scattering mechanism on the rf penetration depth? Ion irradiation was used to create extrinsic defects in MgB2 and we found that band scattering mechanisms can be selectively tuned with the type of extrinsic defects. Study of variation in rf penetration depth shows evidence for very strong intergrain pinning it also reflected the modification in the band scattering. We compare the Bulk pinning force constant, intergrain connectivity and broadening of superconducting transition of MgB2 with Bi2Sr2Ca2Cu3O10 and NbSe2 and analyze the magnetoresistance data for MgB2 in the context of thermally activated flux flow behavior and compare vortex activation energy and provide evidence of Arrhenius behavior in the MgB2 samples. The possibilities & future extension of this work is also presented.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

Present work on superconducting multiband MgB2 was started to sort out some relevant question such as how does the band scattering mechanism behaves with density and type of extrinsic defects, How does the pinning force constant in the intergrain and intragrain regions compare with other low Tc and high Tc superconductors? With the introduction of defects, is there some reflection of the changing scattering mechanism on the rf penetration depth? Ion irradiation was used to create extrinsic defects in MgB2 and we found that band scattering mechanisms can be selectively tuned with the type of extrinsic defects. Study of variation in rf penetration depth shows evidence for very strong intergrain pinning it also reflected the modification in the band scattering. We compare the Bulk pinning force constant, intergrain connectivity and broadening of superconducting transition of MgB2 with Bi2Sr2Ca2Cu3O10 and NbSe2 and analyze the magnetoresistance data for MgB2 in the context of thermally activated flux flow behavior and compare vortex activation energy and provide evidence of Arrhenius behavior in the MgB2 samples. The possibilities & future extension of this work is also presented.

Biographie de l'auteur

Author studied the effect of pinning disorder in superconducting MgB2 for doctorate. He joined UGC-DAE-CSR Mumbai Centre as a faculty after Ph.D. from Jawaharlal Nehru University, India. His current research interest is characterizing magnetic & multifunctional materials using temperature & magnetic field dependent neutron diffraction.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
VDM Verlag Dr. Müller
Date d'édition
2011
Langue
anglais
ISBN 10 
3639364228
ISBN 13 
9783639364224
Reliure
Broché
Nombre de pages
160
Coordonnées du fabricant
non disponible
Personne responsable
non disponible