Savaskan, B.Ozturk, U. K.Guner, S. B.Abdioglu, M.Bahadir, M. V.Acar, S.Somer, M.2024-10-042024-10-0420230925-83881873-4669https://doi.org/10.1016/j.jallcom.2023.170893http://hdl.handle.net/20.500.12403/3062Bulk MgB2 discs were prepared by an in situ route from mixtures of magnesium and boron powders. The boron powders were produced by two methods. The first one consisted of a self-propagating high tem-perature magnesiothermic synthesis (SHS) process followed by acid and fluorine cleaning and a heat treatment in inert atmosphere. This approach produced boron with purities between 86 % and 97 %, where the main impurity was Mg. Depending on the final heat treatment, these boron powders were amorphous or crystalline. In the second route, high purity nano powders (99 %) of boron were obtained by a diborane pyrolysis process. Bulks of MgB2 were characterized by structural, microstructural, and magnetic mea-surements. Critical current density, pinning force aspects and levitation force (including guiding force) details were assessed. Amorphous lower purity boron (86-97 %) obtained by the first processing route was found to promote the largest levitation forces of the MgB2 bulks and, among these samples, the best le-vitation results were recorded when using boron with a purity of 95-97 %. Use of a lower purity boron that decreases the cost of MgB2 promotes large scale production at industrial level of bulk MgB2 super-conducting magnets for levitation applications and enhances the applicability potential of MgB2 super-conductor. The relationship between levitation force and specific features of the samples such as pinning force details are discussed.& COPY; 2023 Elsevier B.V. All rights reserved.eninfo:eu-repo/semantics/closedAccessMgB 2 superconductorBoron qualityLevitation forceCritical current densityPinning forceArticle96110.1016/j.jallcom.2023.1708932-s2.0-85162015407Q1WOS:001028944500001Q1