Determination of Solubility Characteristic of (Bi, Gd) Substitution in Bi-2223 Inorganic Compounds

Yusuf Zalaoğlu

doi:https://doi.org/10.16984/saufenbilder.344752

Makale detayları

Determination of Solubility Characteristic of (Bi, Gd) Substitution in Bi-2223 Inorganic Compounds

Yazarlar:

Yusuf Zalaoğlu

Ana Başlıklar:

İmalat

Dergi:

Sakarya University Journal of Science 2018 Vol.22 Issue 5, pp.1221-1233

Belge Tipi:

Makale

Yayın Tarihi:

9/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000557564

DOI:

https://doi.org/10.16984/saufenbilder.344752

Özet:

 


In this study, it is examined the significant variations in the superconducting, electrical and structural
belongings of Bi-site Gd nanoparticle substituted Bi-2223 crystal. The Bi2.0-xGdxSr2.0Ca2.1Cu3.2Oy
(0≤x≤0.3) materials obtained with the standard solid state reaction technique are characterized by dc
resistivity (ρ-T), X-ray diffraction (XRD) and transport critical current density (Jc) measurements.
Moreover, all experimental findings as regards room temperature resistivity, residual resistivity, critical
transition temperatures (

−
),
crystallinity, lattice constant parameters, average crystallite
size, phase fraction and strength quality of interaction between superconducting grains in the Bi-2223
ceramics declare that the structural, electrical and superconducting characteristics degrade systematically
with the ascending of the Gd substitution level in the Bi-2223 samples. Furthermore, the major reason of
the reduction trend observed especially in the electrical and superconducting features is in relation with the
hole localization problem in the Cu-O2 layers. In this regard, grain boundary weak connections, dislocations
and defects in the matrix considerably ascend with the enhancement of Gd nanoparticle substitution level.
As seen from XRD measurements, it is clearly determined that there seems to be a decrement in the Bi2223
phase with the enhancement of Gd inclusions up to the substitution amount of x=0.1. After this critical
point, new characteristics peaks of Gd2O3 appear and measurement findings rapidly diminish to the
minimum values. This substitution level emphasizes that the solubility limit of Gd is noted to be x=0.1 for
Bi-2223. Likewise, the regular decrement observed c-axis length, critical current density and grain size
favors the regular retrogression of the superconducting characteristics.


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Makale detayları

Determination of Solubility Characteristic of (Bi, Gd) Substitution in Bi-2223 Inorganic Compounds

Yazarlar: Yusuf Zalaoğlu

Ana Başlıklar: İmalat

Dergi: Sakarya University Journal of Science 2018 Vol.22 Issue 5, pp.1221-1233

Belge Tipi: Makale

Yayın Tarihi: 9/2018

Belge Dili: İngilizce

Document ID (Org No.): 2000557564

DOI: https://doi.org/10.16984/saufenbilder.344752

Sayı

Yazarlar:

Yusuf Zalaoğlu

Ana Başlıklar:

İmalat

Dergi:

Sakarya University Journal of Science 2018 Vol.22 Issue 5, pp.1221-1233

Belge Tipi:

Makale

Yayın Tarihi:

9/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000557564

DOI:

https://doi.org/10.16984/saufenbilder.344752