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本文从经典铁磁系统的畴壁运动方程出发,按照通常的正则量子化方法并通过幺正变换,求得了铁磁系统中介观畴壁的能级和相应的本征矢量,给出了当体系处于任意本征态时介观畴壁的坐标、动量的量子涨落以及两者之间的测不准关系.进一步揭示了在低温下铁磁体畴壁运动的量子性的确来源于体系零点振动的涨落.

参考文献

[1] Uehara M .Magnetization reversal in SmCo3.5Cu1.5 single crystal and Sm(Co-Cu-Fe-Ti)6.8 sintered magnet at very low temperatures[J].Journal of Magnetism and Magnetic Materials,1983,31-34:1017-1018.
[2] Uehara M;Barbara B et al.Staircase behavior in the magnetization reversal of a chemi-cally disordered magnet at low temperature[J].Physics Letters Section A:General,Atomic and Solid State Physics,1986,114:23-26.
[3] Uehara M;Barbara B .Noncoherent quantum effects in the magnetization reversal of a chemically disordered magnet: SmCo3.5Cu1.5[J].Journal of Physics,1986,47(02):235-238.
[4] Su G;Chen B et al.Temperature dependence of the caercivity for some inter-metallic magnetic particles at low temperatures[J].Physica Status Solidi B,1994,181(01):33-36.
[5] Chudnovsky E M;Gunther L .Quantum tunneling of magnetization in small ferromagnetic particles[J].Physical Review Letters,1988,60(08):661-664.
[6] Barbara B;Chudnovsky E M .Mesoscopic quantum tunneling in antiferro-magnets[J].Physics Letters Section A:General,Atomic and Solid State Physics,1990,145(04):205-208.
[7] Paulsen C;Sampaio L C et al.Mesoscopic quantum tunnelling effects of Bloch walls in small ferromagnetic particles[J].EUROPHYSICS LETTERS,1992,19(07):643-648.
[8] Chen B;Xie B K et al.Quantum fluctuation of a mesoscopic domain wall in the ferromagnetic systems.Chin[J].Chin J Low Temp Phys,1997,19(01):53-56.
[9] Liao S B.[M].北京:科学出版社,1988:49.
[10] Su G .The fluctuation mean energy of a moving domain wall system[J].Physics Letters Section A:General,Atomic and Solid State Physics,1990,145(2,3):137-140.
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