Araştırma Makalesi
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Effect of B purity on MgB2 superconductor prepared by Mg diffusion technique using Turkish Boron

Yıl 2024, Cilt: 36 Sayı: 2, 521 - 534

Özlem Çiçek

https://doi.org/10.35234/fumbd.1429915

Öz

MgB2bulks were synthesized by the Mg diffusion method under exactly the same conditions, using B powder of three different purities purified in Turkey. In laboratory scale studies, high purity starting powders are used. For large-scale production, low purity powders are better in terms of production costs. In this study, the effect of low purity grade B on the Mg diffusion method was examined. The microstructural properties of MgB2 samples produced by heat treatment at 850 °C for 10 hours were examined by XRD analysis. Rietveld refinement was performed on these results, and lattice parameters were obtained around a=b=3.08 Å, c=3.52 Å. Crystal sizes and microstrains were calculated using the Scherrer and Williamson-Hall formulas. In addition, by magnetic measurements, the Tc was determined to be 38.74 K, and the Jc (B = 0) at 20 K was determined to be 3.14x105 A/cm2 for the sample using an 86.70% purity B source. Fp was calculated, and pinning mechanisms were examined using the Dew-Hughes scaling approach. The dominant pinning mechanism was determined to be grain boundaries and non-superconducting points. It has been shown that high Jc and Tc values, which are important for relevant technologies, can be achieved with the 86.70% purity of the B source purified in Turkey.

Anahtar Kelimeler

MgB2 B purity Rietveld purification critical current density

Etik Beyan

I declare that this work is an original work, the idea of ​​the work belongs to me, all experimental studies were carried out by me with the support of TÜBİTAK 2219, all stages of data collection, analysis and presentation of information have been carried out by me in accordance with the principles and rules of scientific ethics, I have cited all data and information not obtained within the scope of this study and that I have included these sources in the bibliography.

Destekleyen Kurum

TUBITAK

Proje Numarası

TÜBİTAK’ın 2219-Yurt Dışı Doktora Sonrası Araştırma Burs Programı

Teşekkür

It was prepared from the results of the study conducted with the support of TÜBİTAK's 2219-Overseas Postdoctoral Research Scholarship Program. I would like to thank TÜBİTAK for this support.

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Mg Difüzyonu Tekniği ile Türkiye’de Saflaştırılmış Bor Kullanılarak Üretilen MgB2 için B Saflığının Süperiletkenlik Özellikleri Üzerine Etkisi

Yıl 2024, Cilt: 36 Sayı: 2, 521 - 534

Özlem Çiçek

https://doi.org/10.35234/fumbd.1429915

Öz

MgB2 süperiletken külçeleri, Türkiye’de saflaştırılmış olan üç farklı saflıkta B tozu kullanarak tümüyle aynı koşullarda Mg difüzyon yöntemiyle sentezlendi. Laboratuvar ölçekli çalışmalarda çoğunlukla yüksek saflıkta başlangıç tozları kullanılmaktadır. Büyük ölçekli üretim için yüksek saflıktaki başlangıç tozları üretim maliyeti açısından büyük bir yük getirmektedir. Bu çalışmamızda Mg difüzyon yöntemi için B düşük saflık derecesinin etkisi incelenmiştir. 850 °C’de 10 saatlik ısıl işlem sonucu üretilen MgB2 külçe numunelerinin, mikro yapısal özellikleri XRD analizleri ile incelenmiştir. XRD sonuçları Rietveld yöntemiyle arıtılarak örgü parametreleri a=b=3,08 Å, c=3,52 Å civarında elde edilmiştir. Kristal boyutları ve mikro gerinimleri Scherrer ve Williamson-Hall formülleri kullanılarak hesaplanmıştır. Ayrıca manyetik özellikleri incelendiğinde, %86,70 saflıkta B kaynağı kullanılan numune de Tc değeri 38,74 K ve 20 K’de Jc(B=0) değeri ise 3,14x105 A/cm2 olarak tespit edilmiştir. Manyetik ölçümlerden Fp hesaplanmış ve çivilenme mekanizmaları Dew-Hughes'un ölçeklendirme yaklaşımı ile irdelenmiştir. Numunelerimizin tümünde baskın çivilenme mekanizması tane sınırları ve süperiletken olmayan nokta çivilenme mekanizmaları olduğu tespit edilmiştir. İlgili teknolojiler için önemli olan yüksek Jc ve Tc değerlerine %86,70 saflıkta Türkiye’de saflaştırılmış olan B kaynağı ile ulaşılabileceği gösterilmiştir.

Anahtar Kelimeler

MgB2 B Saflığı Rietveld Arıtımı Kritik Akım Yoğunluğu Çivilenme Mekanizması

Etik Beyan

Bu çalışmanın, özgün bir çalışma olduğunu; çalışma fikrinin tarafıma ait olduğunu, tüm deneysel çalışmaların TÜBİTAK 2219 desteği ile tarafımca yapıldığını, veri toplama, analiz ve bilgilerin sunumu olmak üzere tüm aşamalarından bilimsel etik ilke ve kurallarına uygun davranarak tarafımca yapıldığını, bu çalışma kapsamında elde edilmeyen tüm veri ve bilgiler için kaynak gösterdiğimi ve bu kaynaklara kaynakçada yer verdiğimi beyan ederim.

Destekleyen Kurum

TÜBİTAK

Proje Numarası

TÜBİTAK’ın 2219-Yurt Dışı Doktora Sonrası Araştırma Burs Programı

Teşekkür

TÜBİTAK’ın 2219-Yurt Dışı Doktora Sonrası Araştırma Burs Programı desteği ile yapılan çalışma sonuçlarından hazırlanmıştır. Bu desteği için TÜBİTAK'a teşekkür ederim.

Kaynakça

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  • Zhou S, Pan AV, Dou SX. An attempt to improve the superconducting properties of MgB2 by doping with Zn-containing organic compound. Journal of Alloys and Compounds 2009; 487 (1-2): 42-46. https://doi.org/10.1016/j.jallcom.2009.08.046
  • Sinha BB, Kadam MB, Mudgel M, Awana VPS, Kishan H, Pawar SH. Synthesis and characterization of excess magnesium MgB2 superconductor under inert carbon environment. Physica C: Superconductivity 2010; 470 (1: 25-30. https://doi.org/10.1016/j.physc.2009.09.010
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  • Zhang Z, Suo H, Ma L, Zhang T, Liu M, Zhou M. Critical current density in MgB2 bulk samples after co-doping with nano-SiC and poly zinc acrylate complexes. Physica C: Superconductivity and its Applications 2011; 471 (21-22): 908-911. https://doi.org/10.1016/j.physc.2011.05.086
  • Kim JH, Dou SX, Rindfleisch M, Tomsic M. Study of MgO formation and structural defects in in situ processed MgB2. Superconductor Science and Technology 2007; 20 (10): 1026-1031. https://doi.org/10.1088/0953-2048/20/10/023
  • Qin F, Cai Q, Chen H. Partial dissolution of MgO and the effect on critical current density in urea-doped MgB2 bulks. Journal of Alloys and Compounds 2015; 633: 201-206. https://doi.org/10.1016/j.jallcom.2015.02.018
  • Singh DK, Tiwari B, Jha R, Kishan H, Awana VSP. Role of MgO impurity on the superconducting properties of MgB2. Physica C: Superconductivity and its Applications 2014; 505: 104-108. https://doi.org/10.1016/j.physc.2014.06.004
  • Jiang CH, Hatakeyama H, Kumakura H. Effect of nanometer MgO addition on the in situ PIT processed MgB2/Fe tapes. Physica C: Superconductivity 2005; 423, (1-2): 45-50. https://doi.org/10.1016/j.physc.2005.03.022
  • Mostafa MYA, Mostafa A, Abdel-Rahman M, Assem EE, Ashour A, Badawi EA. XRD peak broadening modelling for Al-alloys characterization compared with Rietveld profile analysis. Materials Today: Proceedings, 2023. https://doi.org/10.1016/j.matpr.2023.04.252
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  • Kim JH, Dou SX, Shi DQ, Rindfleisch M, Tomsic M. Study of MgO formation and structural defects inin situprocessed MgB2/Fe wires. Superconductor Science and Technology 2007; 20 (10): 1026-1031. https://doi.org/10.1088/0953-2048/20/10/023
  • Maeda M, Choi JH, Knott JC, Kim JH, Hahn G, Kang H, Hahn S, Choi S. Disorder anisotropy of layered structure in multi-band MgB2 superconducting materials with high critical current performance. Journal of Alloys and Compounds 2023; 934: 167873. https://doi.org/10.1016/j.jallcom.2022.167873
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Toplam 78 adet kaynakça vardır.

Ayrıntılar

Birincil Dil Türkçe
Konular Fiziksel Metalurji, Malzeme Karekterizasyonu
Bölüm MBD
Yazarlar

Özlem Çiçek 0000-0001-9350-3456

Proje Numarası TÜBİTAK’ın 2219-Yurt Dışı Doktora Sonrası Araştırma Burs Programı
Yayımlanma Tarihi
Gönderilme Tarihi 1 Şubat 2024
Kabul Tarihi 4 Mayıs 2024
Yayımlandığı Sayı Yıl 2024 Cilt: 36 Sayı: 2

Kaynak Göster

APA Çiçek, Ö. (t.y.). Mg Difüzyonu Tekniği ile Türkiye’de Saflaştırılmış Bor Kullanılarak Üretilen MgB2 için B Saflığının Süperiletkenlik Özellikleri Üzerine Etkisi. Fırat Üniversitesi Mühendislik Bilimleri Dergisi, 36(2), 521-534. https://doi.org/10.35234/fumbd.1429915
AMA Çiçek Ö. Mg Difüzyonu Tekniği ile Türkiye’de Saflaştırılmış Bor Kullanılarak Üretilen MgB2 için B Saflığının Süperiletkenlik Özellikleri Üzerine Etkisi. Fırat Üniversitesi Mühendislik Bilimleri Dergisi. 36(2):521-534. doi:10.35234/fumbd.1429915
Chicago Çiçek, Özlem. “Mg Difüzyonu Tekniği Ile Türkiye’de Saflaştırılmış Bor Kullanılarak Üretilen MgB2 için B Saflığının Süperiletkenlik Özellikleri Üzerine Etkisi”. Fırat Üniversitesi Mühendislik Bilimleri Dergisi 36, sy. 2 t.y.: 521-34. https://doi.org/10.35234/fumbd.1429915.
EndNote Çiçek Ö Mg Difüzyonu Tekniği ile Türkiye’de Saflaştırılmış Bor Kullanılarak Üretilen MgB2 için B Saflığının Süperiletkenlik Özellikleri Üzerine Etkisi. Fırat Üniversitesi Mühendislik Bilimleri Dergisi 36 2 521–534.
IEEE Ö. Çiçek, “Mg Difüzyonu Tekniği ile Türkiye’de Saflaştırılmış Bor Kullanılarak Üretilen MgB2 için B Saflığının Süperiletkenlik Özellikleri Üzerine Etkisi”, Fırat Üniversitesi Mühendislik Bilimleri Dergisi, c. 36, sy. 2, ss. 521–534, doi: 10.35234/fumbd.1429915.
ISNAD Çiçek, Özlem. “Mg Difüzyonu Tekniği Ile Türkiye’de Saflaştırılmış Bor Kullanılarak Üretilen MgB2 için B Saflığının Süperiletkenlik Özellikleri Üzerine Etkisi”. Fırat Üniversitesi Mühendislik Bilimleri Dergisi 36/2 (t.y.), 521-534. https://doi.org/10.35234/fumbd.1429915.
JAMA Çiçek Ö. Mg Difüzyonu Tekniği ile Türkiye’de Saflaştırılmış Bor Kullanılarak Üretilen MgB2 için B Saflığının Süperiletkenlik Özellikleri Üzerine Etkisi. Fırat Üniversitesi Mühendislik Bilimleri Dergisi.;36:521–534.
MLA Çiçek, Özlem. “Mg Difüzyonu Tekniği Ile Türkiye’de Saflaştırılmış Bor Kullanılarak Üretilen MgB2 için B Saflığının Süperiletkenlik Özellikleri Üzerine Etkisi”. Fırat Üniversitesi Mühendislik Bilimleri Dergisi, c. 36, sy. 2, ss. 521-34, doi:10.35234/fumbd.1429915.
Vancouver Çiçek Ö. Mg Difüzyonu Tekniği ile Türkiye’de Saflaştırılmış Bor Kullanılarak Üretilen MgB2 için B Saflığının Süperiletkenlik Özellikleri Üzerine Etkisi. Fırat Üniversitesi Mühendislik Bilimleri Dergisi. 36(2):521-34.
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