Field induced structural transition in mesocrystallites

被引：86

作者：

Wen, WJ ^{[1
]}

Wang, N ^{[1
]}

Ma, HR ^{[1
]}

Lin, ZF ^{[1
]}

Tam, WY ^{[1
]}

Chan, CT ^{[1
]}

Sheng, P ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.82.4248

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have fabricated multiply coated glass spheres with diameters of 45(+/-2) mu m that exhibit appreciable magneto-, as well as electrorheological responses. Under crossed electric and magnetic fields, the microspheres were observed to form columnar crystallites with a structure that transforms from body-centered tetragonal to face-centered cubic as the ratio between the magnetic and the electric fields exceeded a minimum value. The observed transition scenario is in excellent agreement with calculations based on the model of field induced crystal formation and structural transition. [S0031-9007(99)09153-X].

引用

页码：4248 / 4251

页数：4

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