@article{oai:kyutech.repo.nii.ac.jp:00006539,
 author = {Mito, Masaki and 美藤, 正樹 and Shigeoka,  Shun and Kondo,  Hirotaka and Noumi,  Nozomi and Kitamura,  Yuichiro and Irie,  Kunihiko and Nakamura, Kazuma and 中村, 和磨 and Takagi, Seishi and 高木, 精志 and Deguchi, Hiroyuki and 出口, 博之 and Tajiri,  Takayuki and Ishizuka,  Mamoru and Nishizaki,  Terukazu and Edalati,  Kaveh and Horita, Zenji and 堀田, 善治},
 issue = {8},
 journal = {Materials Transactions},
 month = {Aug},
 note = {In fifth-group element superconductors V, Nb, and Ta, the increase in superconducting transition temperature (Tc) was attempted by using both high-pressure torsion (HPT) and additional hydrostatic pressure (HP) compression. The former brings about the grain refinement and strain accumulation in the unit-cell level. The additional compression for severely strained superconductors triggers strengthening intergrain-contact and/or structural deformation in the unit-cell level. The manner of the appearance of the above two effects depends on the kind of elements: First, in V, there is no prominent effect of HPT, comparing to the hydrostatic compression effects on its non-strained material. Next, in Ta, the effect of strengthening intergrain-contact appears at small hydrostatic compression, resulting in temporal increase in Tc. Finally, Nb exhibits prominent increase in Tc by both effects and, in particular, the structural deformation in the unit-cell level promotes the increase in Tc. Thus, the accumulation of residual strain in the level of starting material can be a promising work to manipulate Tc under HP compression.},
 pages = {1472--1483},
 title = {Hydrostatic Compression Effects on Fifth-Group Element Superconductors V, Nb, and Ta Subjected to High-Pressure Torsion},
 volume = {60},
 year = {2019},
 yomi = {ミトウ, マサキ and ナカムラ, カズマ and タカギ, セイシ and デグチ, ヒロユキ and ホリタ, ゼンジ}
}