129324 20231215094308.0 doi 10.1016/j.jallcom.2019.151966 sideral 114766 ART-2019-114766 eng Ozturk, K. IR laser line scanning treatments to improve levitation forces in MgTi0.06B2 bulk materials 2019 Infrared (IR) laser-line scanning has been widely used to induce different surface microstructures in a broad range of materials. In this work, this laser configuration was applied on the surface of MgTi0.06B2 bulk samples in order to ascertain its effects on their superconducting properties, particularly on the magnetic levitation forces. The microstructural changes produced by this type of laser treatment were investigated by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). It was observed that the thermal treatment induced by the laser improves grain connectivity in a layer of material just below the irradiated surface, in agreement with the observed improvement in critical current density values, Jc, which were estimated from isothermal magnetic hysteresis loops. A significant increment of both vertical (Fz) and lateral (Fx) magnetic levitation forces was achieved. Numerical calculations were performed to understand the experimental behaviour and to clarify how an improvement of Jc near the surface can improve the magnetic levitation force of these materials. In addition, the same studies were carried out in similar bulk samples but with nano-sized silver particle additions of 3 and 6 wt %, in the outer ring of the bulk, observing also an improvement of the levitation forces, albeit less than in samples without Ag because of the better performance of the original samples after laser treatment. These results are relevant to those studying superconductor fabrication and material fabrication modelling, essential for the development of technological applications of superconductors, and are based on microstructure control via application of a recently developed laser-line scan method. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/T54-17R info:eu-repo/grantAgreement/ES/MICIU/ENE2017-83669-C4-1-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 4.65 2019 METALLURGY & METALLURGICAL ENGINEERING 8 / 78 = 0.103 2019 Q1 T1 CHEMISTRY, PHYSICAL 51 / 159 = 0.321 2019 Q2 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 81 / 314 = 0.258 2019 Q2 T1 1.055 2019 Materials Chemistry 2019 Q1 Metals and Alloys 2019 Q1 Mechanics of Materials 2019 Q1 Mechanical Engineering 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Aksoy, C. Angurel, L.A. Universidad de Zaragoza (orcid)0000-0001-5685-2366 Savaskan, B. Martínez, E. Universidad de Zaragoza (orcid)0000-0003-4839-5286 Badía-Majós, A. de la Fuente, G.F. Guner, B. Dancer, C.E.J. Universidad de Zaragoza (orcid)0000-0002-8753-2397 Celik, S. Universidad de Zaragoza (orcid)0000-0002-0500-1745 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 811 (2019), 151966 [10 pp.] J. alloys compd. JOURNAL OF ALLOYS AND COMPOUNDS 0925-8388 1180617 http://zaguan.unizar.es/record/129324/files/texto_completo.pdf Postprint 1992308 http://zaguan.unizar.es/record/129324/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:129324 articulos driver 2023-12-14-13:17:30 ARTICLE