Abstract
In this study, porous MnFe2O4 nanoflakes were synthesized by a facile one-step solvothermal method, and the obtained products were employed as new magnetorheological (MR) materials to prepare a well dispersed MR suspension. The synthesized MnFe2O4 nanoflakes were systematically examined using XRD, FE-SEM, TEM, XPS, BET and VSM. The shear stress, yield stress, storage modulus and loss modulus of MR fluid strongly depended on the applied magnetic field strengths, indicating typical MR performances. More importantly, the obtained MR fluid demonstrated enhanced sedimentation stability in the recording time. This phenomenon was mainly attributed to the unique porous lamellar structure and the decreased particle-fluid density mismatch. In conclusion, the prepared MnFe2O4 nanoflakes as novel MR materials will serve as a bright candidate in various technological applications.
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