Magnetic relaxation in Ni wires
作者： Hiroki Yamazaki , Gen Tatara , Koichi Katsumata , Koji Ishibashi , Yoshinobu Aoyagi
DOI: 10.1016/0304-8853(95)00816-0
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摘要: Abstract The magnetic relaxation in Ni wires has been investigated using a SQUID magnetometer. magnetization M exhibited logarithmic dependence on time. distribution of energy barriers was estimated from the temperature viscosity S = d /d(log t ). Thermal excitation explains field - T curves except below 20 K. Below K, macroscopic quantum tunneling and/or interaction between must be considered.
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