Bi1.7Pb0.3Sr2Ca2Cu2.75Na0.25Oy Seramik Süperiletken Sisteminde Mekaniksel Özellikleri Üzerine Nano Boyutta Eu Katkısın Etkisi

Yıl 2025, Cilt: 15 Sayı: 2, 245 - 258, 31.12.2025

Mehmet Ersin Aytekin , Mustafa Akyol

https://doi.org/10.37094/adyujsci.1707341

Öz

Bu çalışmada, Bi1.7Pb0.3Sr2-x(Eu)xCa2Cu2.75Na0.25Oy (x = 0.00, 0.20, 0.25 ve 0.30) süperiletken sisteminin morfolojik yapısı ve mekanik özellikleri incelenmiştir. Katı hal tepkime yöntemi ile hazırlanan nano boyutlu Eu (80 nm) katkılı seramik örneklerin faz oluşumu, morfolojik yapısı ve mekanik özellikleri sırasıyla X-ışını kırınımı (XRD), taramalı elektron mikroskobu (SEM) ve Vickers mikrosertlik cihazı ile karakterize edilmiştir. X-ışını ölçüm verilerinde Bi, Pb-2223 yüksek sıcaklık fazları, Bi-2212 düşük sıcaklık süperiletken fazı ve minör safsızlık fazı üretimi tespit edildi. Tetragonal simetriye sahip Bi-2223 süperiletken fazı, tüm numunelerde temel faz yapısıdır. SEM inceleme bulgularına göre, plaka benzeri tane tiplerinde Bi-2223 fazı tespit edilmiştir. Taneciklerin düzgün dağılımı ve aralarında güçlü bağlantılar ile x = 0,25 nano boyutlu oranda Eu içeren örnek daha az gözenekli bir morfolojik yapıya sahiptir. Güçlü tanecikler arası bağlar ve az boşluklu yapı oluştuğu için, x = 0,25'te nano boyutlu Eu katkısı olan örnek, mikro sertlik ölçümünün sonuçlarına göre en iyi mekanik özellikleri sergilemiştir.

Anahtar Kelimeler

Bi,Pb-2223 , Mikrohardness , Vickers , SEM

Proje Numarası

This study is supported by TUBITAK with project number 122C061 within the scope of "2218 - National Postdoctoral Research Fellowship Program".

Effect of Nano-Sized Eu Substituting on Mechanical Properties of Bi1.7Pb0.3Sr2Ca2Cu2.75Na0.25Oy Ceramic Superconductor System

Öz

In this paper, the morphological, structure and mechanical properties of the superconducting system Bi1.7Pb0.3Sr2-x(Eu)xCa2Cu2.75Na0.25Oy (x = 0.00, 0.20, 0.25 and 0.30) have been investigated. Phase formation, morphological structure and mechanical properties of nano-sized Eu (80 nm) substituted ceramic samples prepared by solid state reaction method were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Vickers microhardness instrument, respectively. Bi, Pb-2223 high temperature phases, Bi-2212 low temperature superconductor phase, and minor impurity phase production were identified in the X-ray measurement data. In all samples, the main phase structure is the tetragonal symmetric Bi-2223 superconducting phase. According to the SEM examination findings, the Bi-2223 phase has been detected by flaky plate-like grain types. With a uniform distribution of grains and strong connections between them, the sample containing Eu at the nano-sized ratio of x = 0.25 has a less porous morphological structure. Because strong intergranular bonds and a decreased void structure were formed, the sample with nano-sized Eu substitution at x = 0.25 exhibited the best mechanical properties, according to the results of the microhardness measurement.

Anahtar Kelimeler

Bi,Pb-2223 , Microhardness , Vickers , SEM

Destekleyen Kurum

TÜBİTAK

Proje Numarası

This study is supported by TUBITAK with project number 122C061 within the scope of "2218 - National Postdoctoral Research Fellowship Program".

Teşekkür

I would like to thank the "BİDEB 2218 Domestic Postdoctoral Research Scholarship Program" for their support.

Kaynakça

• [1] Aytekin, M.E., Akyol, M., Özkurt, B., Improvement in electrical properties of Bi-2212 superconducting materials substituted with large-scale nano-sized tin, Applied Physics A, 130, 68–78, 2024.
• [2] Shen, T., Garcia Fajardo, L., Superconducting accelerator magnets based on high-temperature superconducting Bi-2212 round wires, Instruments, 4(2), 17– 39, 2020.
• [3] Yin, S., Swanson, J., Shen, T., Design of a high toughness epoxy for superconducting magnets and its key properties, IEEE Transactions on Applied Superconductivity, 30, 1–5, 2020.
• [4] Chen, P., Trociewitz, U.P., Dalban-Canassy, M., Jiang, J., Hellstrom, E.E., Larbalestier, D.C., Performance of titanium oxide–polymer insulation in superconducting coils made of Bi-2212/Ag-alloy round wire, Superconductor Science and Technology, 26, 075009, 2013.
• [5] Al Azzawi, A.N.S., Türköz, M.B., Erdem, Ü., Yildirim, G., Improvement in organization of Cu–O coordination and super-electrons in Bi-2212 ceramic matrix with Ag/Sr partial substitution, Journal of Materials Science: Materials in Electronics, 35, 1236–1261, 2024.
• [6] Özkurt, B., The influence of Na addition on the mechanical properties of Bi-2212 superconductors, Journal of Superconductivity and Novel Magnetism, 27, 2407–2414, 2014.
• [7] Aytekin, M.E., Özkurt, B., Sugözü, İ., Physical, magnetic and mechanical properties of Bi-2212 superconductors prepared by high pelletization pressure, Journal of Materials Science: Materials in Electronics, 26, 1799–1805, 2015.
• [8] Zalaoglu, Y., Turgay, T., Ulgen, A., Erdem, U., Turkoz, M., Yildirim, G., A novel research on the subject of the load-independent microhardness performances of Sr/Ti partial displacement in Bi-2212 ceramics, Journal of Materials Science: Materials in Electronics, 31, 22239–22251, 2020.
• [9] Kahraman, F., Evaluation of the Vickers microhardness and fracture toughness on hot pressed Bi-2212/Ag ceramic composites, Journal of Materials Science: Materials in Electronics, 27, 8006–8012, 2016.
• [10] Kurtul, G., Ulgen, A.T., Armagan, O., Turkoz, M. B., Erdem, Ü., Yildirim, G., Role of dysprosium substitution on microscopy architecture, structural stability, and crack propagation mechanism in Bi-2212 engineering ceramics, Physica Scripta, 100(2), 025932, 2025.
• [11] Akkurt, B., Yildirim, G., Change of mechanical performance and characterization with replacement of Ca by Gd nanoparticles in Bi-2212 system and suppression of durable tetragonal phase by Gd, Journal of Materials Science: Materials in Electronics, 27(12), 13034–13043, 2016.
• [12] Aytekin, M.E., Akyol, M., Effect of Nano-Sized Europium Substitution on Strontium Sites on Diamagnetic Properties in BiPb-2223 Superconductor System, Journal of NanoScience in Advanced Materials, 3(1), 8–14, 2024.
• [13] Fallah-Arani, H., Sedghi, A., Baghshahi, S., Moakhar, R. S., Riahi-Noori, N., Nodoushan, N.J., Bi-2223 superconductor ceramics added with cubic-shaped TiO2 nanoparticles: Structural, microstructural, magnetic, and vortex pinning studies, Journal of Alloys and Compounds, 900, 163201, 2022.
• [14] Saxena, R.B., Giri, R., Awana, V.P.S., Singh, H.K., Ansari, M.A., Kumaraswamy, B.V., et. al., Impact of zn Substitution on Phase Formation and Superconductivity of Bi1.6Pb0.4Sr2Ca2Cu3-xZnxO10-δ with x= 0.0, 0.015, 0.03, 0.06, 0.09 and 0.12, Modern Physics Letters B, 19, 771–778, 2005.
• [15] Yıldız, A., Kocabaş, K., Akyüz, G.B., Dependence of the Structural, Electrical and Magnetic Properties of YBa2Cu3O7−δ Bulk Superconductor on the Ag Doping, Journal of superconductivity and novel magnetism, 25, 1459–1467, 2012.
• [16] Kır, M.E., Özkurt, B., Aytekin, M.E., The effect of K-na co-doping on the formation and particle size of Bi-2212 phase, Physica B: Condensed Matter, 490, 79–85, 2016.
• [17] Saghafi, M., Shams, G., Soltani, Z., The influence of Sm2O3 nanoparticles adding on some superconducting properties of Bi1.6Pb0.4Sr2Ca2Cu3O10+δ ceramics, Physica C: Superconductivity and its Applications, 624, 1354566, 2024.
• [18] Aytekin, M.E., Change in Physical, Electrical and Magnetic Properties of Bi-2212 Superconducting Materials Co-Substituted with Nano-Sized Zinc and Sodium, Transactions on Electrical and Electronic Materials, 25, 779–791, 2024.
• [19] Arlina, A., Halim, S., Kechik, M.A., Chen, S., Superconductivity in Bi–Pb–Sr–Ca–Cu–O ceramics with YBCO as additive, Journal of Alloys and Compounds, 645, 269–273, 2015.
• [20] Fallah-Arani, H., Koohani, H., Tehrani, F.S., Noori, N.R., Nodoushan, N.J., The structural, magnetic, and pinning features of Bi-2223 superconductors: Effects of SiC nanoparticles addition, Ceramics International, 48, 31121–31128, 2022.
• [21] El Makdah, M.H., El Ghouch, N., El-Dakdouki, M.H., Awad, R., Matar, M., Synthesis, characterization, and Vickers microhardness for (YIG)x/(Bi, Pb)-2223 superconducting phase, Ceramics International, 49, 22400–22422, 2023.
• [22] Ozturk, O., Arebat, R.A.M., Nefrow, A.R.A., Bulut, F., Guducu, G., Asikuzun, E., et. al., Investigation of structural, superconducting and mechanical properties of Co/Cu substituted YBCO-358 ceramic composites, Journal of Materials Science: Materials in Electronics, 30(8), 7400–7409, 2019.
• [23] Khalil, S. M., Enhancement of superconducting and mechanical properties in BSCCO with Pb additions, Journal of physics and chemistry of solids, 62(3), 457–466, 2001.
• [24] Dogruer, M., Yildirim, G., Ozturk, O., Belenli, I., Terzioglu, C., Variation of mechanical properties of Cr doped Bi-2212 superconductors, Journal of Superconductivity and Novel Magnetism, 26(9), 2949–2954, 2013.
• [25] Sedky, A., and Al-Battat, W., Effect of Y substitution at Ca site on structural and superconducting properties of Bi: 2212 superconductor, Physica B: Condensed Matter, 410, 227–232, 2013.
• [26] Saritekin, N., Üzümcü, A., Improving superconductivity, microstructure, and mechanical properties by substituting different ionic Pb elements to Bi and Ca elements in Bi-2223 superconductors, Journal of Superconductivity and Novel Magnetism, 35, 2259–2273, 2022.
• [27] Kölemen U., Uzun, O., Yılmazlar, M., Güçlü, N., Yanmaz, E., Hardness and microstructural analysis of Bi1.6Pb0.4Sr2Ca2−xSmxCu3Oy polycrystalline superconductors, Journal of Alloys and Compounds, 415, 300–306, 2006.
• [28] Safran, S., Kılıç, A., Kılıçarslan, E., Ozturk, H., Alp, M., Asikuzun, E., et. al., Mechanical, microstructural and magnetic properties of the bulk BSCCO superconductor prepared by two different methods, Journal of Materials Science: Materials in Electronics, 26, 2622–2628, 2015.
• [29] Khalil, S., Enhancement of superconducting and mechanical properties in BSCCO with Pb additions, Journal of Physics and Chemistry of Solids, 62, 457–466, 2001.
• [30] Sarıtekin, N.K., Bilge, H., Kahraman, M.F., Zalaoğlu, Y., Pakdil, M., Doğruer, M., et. al., Improvement of mechanical characteristics and performances with Ni diffusion mechanism throughout Bi-2223 superconducting matrix, AIP Conference Proceedings, 1722, 2016.
• [31] Dogruer, M., Zalaoglu, Y., Yildirim, G., Varilci, A., Terzioglu, C., Effect of diffusion-annealing time (0.5 h≤ t≤ 2 h) on the mechanical and superconducting properties of Cu-diffused bulk MgB2 superconductors by use of experimental and different theoretical models, Journal of Materials Science: Materials in Electronics, 24, 2019–2026, 2013.
• [32] Awad, R., Abou Aly, A. I., Kamal, M., Anas, M., Mechanical properties of (Cu0.5Tl0.5)-1223 substituted by Pr, Journal of superconductivity and novel magnetism, 24, 1947–1956, 2011.
• [33] Ozturk, O., Cetinkara, H. A., Asikuzun, E., Akdogan, M., Yilmazlar, M., and Terzioglu, C., Investigation of mechanical and superconducting properties of iron diffusion-doped Bi-2223 superconductors, Journal of Materials Science: Materials in Electronics, 22, 1501–1508, 2011.
• [34] Özkurt, B., The mechanical properties of Y-doped Bi-2223 superconductors, Journal of Superconductivity and Novel Magnetism, 26, 261–266, 2013.