Frozen-in magnetic order in uniaxial magnetic gels: Preparation and physical properties

被引：84

作者：

Collin, D

Auernhammer, GK

Gavat, O

Martinoty, P

Brand, HR

机构：

[1] Univ Strasbourg, CNRS, Unite Mixre Rech 7506, Lab Dynam Fluides Complexes, F-67070 Strasbourg, France

[2] Univ Bayreuth, Inst Phys, D-95440 Bayreuth, Germany

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2003年 / 24卷 / 12期

关键词：

ferrofluids; gels; magnetic polymers; theology; uniaxial;

D O I：

10.1002/marc.200350016

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];

摘要：

We describe the preparation and characterization of uniaxial magnetic gels. Fibril formation of the embedded magnetic particles generates easily detectable magnetic and optical anisotropies. A finite magnetization is frozen in and leads to a ferromagnetic-like response in small homogenous external magnetic fields. We present for the first time, frequency dependent measurements of the shear modulus G'. Despite their optical and magnetic anisotropy, the gels are mechanically isotropic.

引用

页码：737 / 741

页数：5

共 15 条

[1]

Magnetically textured γ-Fe2O3 nanoparticles in a silica gel matrix:: Optical and magneto-optical properties [J].