title: Improved Superconducting properties in the Mg(11)B2 low activation superconductor prepared by low-temperature sintering.
abstract: Mg(11)B2 has a great application prospect in the superconducting coils for fusion reactor as the "low activation superconductors". The un-doped Mg(11)B2 and Cu-doped Mg(11)B2 bulks using (11)B as a boron precursor were fabricated by low-temperature sintering in present work. It was found that the prepared Mg(11)B2 low activation superconductors exhibit better Jc performance than all of other Mg(11)B2 samples reported in previous studies. As for Cu doped Mg(11)B2, minor Cu addition can obviously improve the Mg(11)B2 grain crystallization and reduce the amount of MgO impurity. Hence, improved grain connectivity and higher Jc at low fields is obtained in Cu doped Mg(11)B2 samples. For un-doped samples, refined grains and more MgO impurity with proper size brought about more flux pinning centers, resulting in better Jc performance at high fields.
authors.affiliation: Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science &Engineering, Tianjin University, Tianjin 300072, People's Republic of China.
authors.forename: Fang
authors.initials: F
authors.lastname: Cheng
authors.affiliation: Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science &Engineering, Tianjin University, Tianjin 300072, People's Republic of China.
authors.forename: Yongchang
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science &Engineering, Tianjin University, Tianjin 300072, People's Republic of China.|Institute for Superconducting and Electronic Materials, AIIM, University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia.
authors.forename: Zongqing
authors.initials: Z
authors.lastname: Ma
authors.affiliation: Institute for Superconducting and Electronic Materials, AIIM, University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia.
authors.forename: M
authors.initials: M
authors.lastname: Shahriar Al Hossain
authors.affiliation: Koc University, Chemistry Department, Rumelifeneri Yolu, TR-34450 Sariyer-Istanbul, Turkey.
authors.forename: M
authors.initials: M
authors.lastname: Somer