@article{bba0ca3e7e554bec98b98aa8dc591054,
title = "High Critical Current Density of Nanostructured MgB2 Bulk Superconductor Densified by Spark Plasma Sintering",
abstract = "In situ MgB2 superconducting samples were prepared by using the spark plasma sintering method. The density of the obtained bulks was up to 95% of the theoretical value predicted for the material. The structural and microstructural characterizations of the samples were investigated using X-ray diffraction and SEM and correlated to their superconducting properties, in particular their critical current densities, Jc, which was measured at 20 K. Extremely high critical current densities of up to 6.75 × 105 A/cm2 in the self-field and above 104 A/cm2 at 4 T were measured at 20 K, indicating that vortex pinning is very strong. This property is mainly attributed to the sample density and MgB2 nanograins in connection to the presence of MgO precipitates and areas rich in boron.",
keywords = "MgB, critical current density, nano grains, spark plasma sintering, superconductivity",
author = "Yiteng Xing and Pierre Bernstein and Muralidhar Miryala and Noudem, {Jacques G.}",
note = "Funding Information: This work was partly supported by Shibaura Institute of Technology (SIT) International Research Center for Green Electronics and Grant-in-Aid FD research budget code: 721MA56383. Funding Information: Y.X. thanks the “Conseil R{\'e}gional-Normandie, France” for her thesis grant. The authors thank Jer{\^o}me Lecourt and Christelle Bilot for their technical support. Publisher Copyright: {\textcopyright} 2022 by the authors.",
year = "2022",
month = aug,
doi = "10.3390/nano12152583",
language = "English",
volume = "12",
journal = "Nanomaterials",
issn = "2079-4991",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "15",
}