Yetiş, HakanAvcl, Do?anKarabo?a, FlratAksoy, CananGajda, DanielMartínez, ElenaTanylldlzl, Fatih Mehmet2024-09-252024-09-2520220953-2048https://doi.org/10.1088/1361-6668/ac5339https://hdl.handle.net/20.500.12491/12443We report transport, electromechanical, and structural properties of single core MgB2/Fe wire produced using a new fabrication method, called designed internal Mg diffusion (IMD) process, which relies on the use of non-stoichiometric Mg + B pellets with excess Mg in place of a central Mg rod used in the standard IMD method. Structural analysis revealed the successful formation of a porous MgB2 structure in the center and a dense circular MgB2 layer surrounding this structure in the designed-IMD wire. Fast transport I-V measurements showed that the designed IMD method increased engineering critical current density (J e) up to twice that of the IMD wires in self-field. The central porous MgB2 structure shared the applied current and indirectly behaved as an internal stabilizer against quench damage at high applied currents. © 2022 IOP Publishing Ltd.eninfo:eu-repo/semantics/openAccessboronIMDMgB₂wirePITArticle10.1088/1361-6668/ac53393542-s2.0-85126033781Q1