<P>Magnetorheological (MR) fluid with tunable and reversible phase transition is one of the most promising smart materials for engineering applications. In this paper, to improve the MR performance of ferrites, non-stoichiometric Zn-doped spinel...
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https://www.riss.kr/link?id=A107415852
2018
-
SCOPUS,SCIE
학술저널
1-4(4쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>Magnetorheological (MR) fluid with tunable and reversible phase transition is one of the most promising smart materials for engineering applications. In this paper, to improve the MR performance of ferrites, non-stoichiometric Zn-doped spinel...
<P>Magnetorheological (MR) fluid with tunable and reversible phase transition is one of the most promising smart materials for engineering applications. In this paper, to improve the MR performance of ferrites, non-stoichiometric Zn-doped spinel ferrite (Zn<SUB>0.417</SUB>Fe<SUB>2.583</SUB>O<SUB>4</SUB>) nanoparticles with a high saturation magnetization and a truncated octahedron-like shape were synthesized using a thermal decomposition process. The crystallographic structure was analyzed using X-ray diffraction and field emission transmission electron microscope image. The Zn<SUB>0.417</SUB>Fe<SUB>2.583</SUB>O<SUB>4</SUB> had a high saturation magnetization value of 101 <TEX>$\text {A}\cdot \text {m}^{2}$</TEX>/kg at 933 kA/m, showing higher saturation magnetization than other ferrites. The MR characteristics of the Zn<SUB>0.417</SUB>Fe<SUB>2.583</SUB>O<SUB>4</SUB> particles suspended in silicone oil were studied using a rotation rheometer under various magnetic field strengths. This MR fluid exhibited typical MR characteristics, and its flow curves were fit well with the Herschel–Bulkley model.</P>
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