{"title":"动态压力对MgB2超导体鲁棒临界温度(Tc)的影响","authors":"Rajkumar Sokkalingam , Abhishek Panghal , Susanta Sinha Roy , Arumugam Sonachalam","doi":"10.1016/j.jmmm.2025.173181","DOIUrl":null,"url":null,"abstract":"<div><div>Highly versatile superconducting magnets find extensive use in numerous industries, such as industry, medicine, and research. Identification of materials that display outstanding stability in high temperatures and pressures is vital for practical applications, as most functional materials cannot keep their crystalline structure in such environments. To investigate this, experiments were conducted to recover shock waves on the MgB<sub>2</sub> superconductor. This work examined the material’s structural, morphological, and magnetic characteristics about three different shock pulse quantities: 0 (pristine), 50 shocks, and 100 shocks. The compounds had a hexagonal crystal structure with the <em>P</em>6/<em>mmm</em> space group, as shown by the powder X-ray diffraction (PXRD) pattern. In addition, the sample was analyzed using field emission scanning electron microscopy, which exhibited a distinct microstructure characterized by irregularly shaped hexagonal grains that can be attributed to the MgB<sub>2</sub> phase. Energy-dispersive X-ray spectroscopy (EDX) was employed to verify the elemental composition. Magnetic properties investigations were carried out on the superconducting MgB<sub>2</sub> material, with a critical temperature (T<sub>c</sub>) of 39 K, using different magnetic fields and across a temperature spectrum from 2 to 45 K. The superconducting transition temperature (T<sub>c</sub> = 39 K) of MgB<sub>2</sub> was proven to be persistent by observing hysteresis loops of magnetization at various temperatures.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"628 ","pages":"Article 173181"},"PeriodicalIF":2.5000,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dynamic pressure effect on robust critical temperature (Tc) of MgB2 superconductor\",\"authors\":\"Rajkumar Sokkalingam , Abhishek Panghal , Susanta Sinha Roy , Arumugam Sonachalam\",\"doi\":\"10.1016/j.jmmm.2025.173181\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Highly versatile superconducting magnets find extensive use in numerous industries, such as industry, medicine, and research. Identification of materials that display outstanding stability in high temperatures and pressures is vital for practical applications, as most functional materials cannot keep their crystalline structure in such environments. To investigate this, experiments were conducted to recover shock waves on the MgB<sub>2</sub> superconductor. This work examined the material’s structural, morphological, and magnetic characteristics about three different shock pulse quantities: 0 (pristine), 50 shocks, and 100 shocks. The compounds had a hexagonal crystal structure with the <em>P</em>6/<em>mmm</em> space group, as shown by the powder X-ray diffraction (PXRD) pattern. In addition, the sample was analyzed using field emission scanning electron microscopy, which exhibited a distinct microstructure characterized by irregularly shaped hexagonal grains that can be attributed to the MgB<sub>2</sub> phase. Energy-dispersive X-ray spectroscopy (EDX) was employed to verify the elemental composition. Magnetic properties investigations were carried out on the superconducting MgB<sub>2</sub> material, with a critical temperature (T<sub>c</sub>) of 39 K, using different magnetic fields and across a temperature spectrum from 2 to 45 K. The superconducting transition temperature (T<sub>c</sub> = 39 K) of MgB<sub>2</sub> was proven to be persistent by observing hysteresis loops of magnetization at various temperatures.</div></div>\",\"PeriodicalId\":366,\"journal\":{\"name\":\"Journal of Magnetism and Magnetic Materials\",\"volume\":\"628 \",\"pages\":\"Article 173181\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2025-05-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Magnetism and Magnetic Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0304885325004135\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Magnetism and Magnetic Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304885325004135","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Dynamic pressure effect on robust critical temperature (Tc) of MgB2 superconductor
Highly versatile superconducting magnets find extensive use in numerous industries, such as industry, medicine, and research. Identification of materials that display outstanding stability in high temperatures and pressures is vital for practical applications, as most functional materials cannot keep their crystalline structure in such environments. To investigate this, experiments were conducted to recover shock waves on the MgB2 superconductor. This work examined the material’s structural, morphological, and magnetic characteristics about three different shock pulse quantities: 0 (pristine), 50 shocks, and 100 shocks. The compounds had a hexagonal crystal structure with the P6/mmm space group, as shown by the powder X-ray diffraction (PXRD) pattern. In addition, the sample was analyzed using field emission scanning electron microscopy, which exhibited a distinct microstructure characterized by irregularly shaped hexagonal grains that can be attributed to the MgB2 phase. Energy-dispersive X-ray spectroscopy (EDX) was employed to verify the elemental composition. Magnetic properties investigations were carried out on the superconducting MgB2 material, with a critical temperature (Tc) of 39 K, using different magnetic fields and across a temperature spectrum from 2 to 45 K. The superconducting transition temperature (Tc = 39 K) of MgB2 was proven to be persistent by observing hysteresis loops of magnetization at various temperatures.
期刊介绍:
The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public.
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Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged.
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