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Magnetic Field Effect on Sound Propagation in Antiferromagnets

机译：磁场对反铁磁体中声音传播的影响

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On the basis of the theory of phase transitions, a model describing anomalies of sound attenuation coefficient close to the antiferromagnet-paramagnet phase transition in magnetic field was developed. The scaling behaviour of the sound velocity and attenuation coefficient was determined. The physical origin of the two-peak structure in the field dependent ultrasound attenuation observed in a number of antiferromagnets was identified. The theoretical results were compared with experimental results obtained for terbium.

机译：根据相变理论，建立了一个模型，描述了在磁场中接近于反铁磁体-顺磁体的相变的声衰减系数异常的模型。确定了声速和衰减系数的缩放行为。确定了在许多反铁磁体中观察到的场相关超声衰减中两个峰结构的物理起源。将理论结果与for的实验结果进行了比较。

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来源
《Acta physica polonica A》|2008年|232-234|共3页
会议地点 Poznan(PL);Poznan(PL)
作者
A. Pawlak; B. Fechner;
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作者单位

Faculty of Physics, Adam Mickiewicz University Umultowska 85, 61-614 Poznan, Poland;

Faculty of Physics, Adam Mickiewicz University Umultowska 85, 61-614 Poznan, Poland;

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会议组织
原文格式 PDF
正文语种 eng
中图分类物理学;
关键词
critical point phenomena; acoustical properties of solids;

机译：临界现象；固体的声学特性;

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Magnetic Field Effect on Sound Propagation in Antiferromagnets

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