On the theory of hysteretic magnetostriction of soft ferrogels
MetadataShow full item record
Physica A: Statistical Mechanics and its Applications 498, 86-95, 2018
SponsorshipThis work has been done under the financial support of the Russian Fund for Basic Research, 16-58-12003, 16-53- 12009, 16-32-00019 mol a, the Program of Russian Federation Ministry of Science and Education, projects 3.1438.2017/4.6, 11.10010.2017/5.2; 3.5214.2017/6.7; D.B. would like to acknowledge the financial support of the Deutsche Forschungsgemeinschaft (DFG) under Grant Bo 3343/1-1 within PAK 907. M.L-L was supported by the project FIS2013-41821-R (Plan Nacional de Investigación Científica, Desarrollo e Innovación Tecnológica, Ministerio de Economía y Competitividad, Spain, co-funded by ERDF, European Union) and by the project FIS2017-85954-R (Agencia Estatal de Investigación, AEI, Spain, cofunded by Fondo Europeo de Desarrollo Regional, ERDF, European Union).
The paper deals with theoretical study of hysteretic magnetostriction of soft ferrogels – composite materials, consisting of the micron-sized magnetizable particles embedded into gel matrices. It is supposed that initially, before application of an external magnetic field, the particles are homogeneously and isotropically distributed in an elastic matrix. The theoretical explanation of the hysteresis phenomena is based on the conception that, under the field action, the particles rearrange into the linear chain-like aggregates. The typical length of the chains is determined by the competition between the force of magnetic attraction of the particles and the force of elastic deformation of the matrix.