Resonance damping in ferromagnets and ferroelectrics

被引：11
作者：
Widom, A. [1 ]
Sivasubramanian, S. [2 ]
Vittoria, C. [3 ]
Yoon, S. [3 ]
Srivastava, Y. N. [4 ,5 ]
机构：
[1] Northeastern Univ, Dept Phys, Boston, MA 02115 USA
[2] Northeastern Univ, NSF Nanoscale Sci & Engn Ctr High Rate Nanomfg, Boston, MA 02115 USA
[3] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA
[4] Univ Perugia, Dept Phys, I-06123 Perugia, Italy
[5] Univ Perugia, INFN, I-06123 Perugia, Italy
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 21期
基金：
美国国家科学基金会;
关键词：
RANDOM-ACCESS MEMORY; THIN-FILM FERROELECTRICS; HYSTERESIS; FERAM; MODEL;
D O I：
10.1103/PhysRevB.81.212402
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The phenomenological equations of motion for the relaxation of ordered phases of magnetized and polarized crystal phases can be developed in close analogy with one another. For the case of magnetized systems, the driving magnetic field intensity toward relaxation was developed by Gilbert. For the case of polarized systems, the driving electric field intensity toward relaxation was developed by Khalatnikov. The transport times for relaxation into thermal equilibrium can be attributed to viscous sound wave damping via magnetostriction for the magnetic case and electrostriction for the polarization case.
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页数：4
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