title: Observation of the Spin-Glass Behavior in Co-Based Antiperovskite Nitride GeNCo3.
abstract: Single-phase antiperovskite nitride GeNCo3 with space group Pm3̅m is successfully synthesized by a solid-gas reaction. The crystal structure, magnetism, specific heat at low temperatures, Hall effect, and electrical and thermal transport properties are widely investigated. Exhilaratingly, a canonical spin-glass (SG) behavior is observed in GeNCo3 with a freezing temperature T0 = 79.43 K, dynamical exponent zν = 6.156, and flipping time τ0 = 5.0 × 10(-12) s. The origin of the SG state in GeNCo3 is likely due to the atomic disorder introduced by the Ge vacancies. This is further proven by the measurements of Ge0.9NCo3 with more Ge deficiencies.
authors: University of Science and Technology of China , Hefei 230026, People's Republic of China.
authors: Lin
authors: L
authors: Zu
authors: Shuai
authors: S
authors: Lin
authors: Jianchao
authors: J
authors: Lin
authors: Bin
authors: B
authors: Yuan
authors: University of Science and Technology of China , Hefei 230026, People's Republic of China.
authors: Xucai
authors: X
authors: Kan
authors: Peng
authors: P
authors: Tong
authors: Wenhai
authors: W
authors: Song
authors: Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, People's Republic of China.
authors: Yuping
authors: Y
authors: Sun