- 作者：Peter Burya ; bury@fel.uniza.sk" class="auth_mail" title="E-mail the corresponding author ; Jozef Kú ; delčí ; ka ; &Scaron ; tefan Hardoňa ; Marek Veveričika ; Peter Kopčanský ; b ; Milan Timkob ; Vlasta Zá ; vi&scaron ; ová ; b
- 关键词：Ferronematics ; Liquid crystal ; Magnetic particles ; Structural changes ; Surface acoustic wave
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2017
- 出版时间：1 February 2017
- 年：2017
- 卷：423
- 期：Complete
- 页码：57-60
- 全文大小：640 K
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The effect of spherical magnetic particles (Fe3O4) on liquid crystals (6CHBT) behavior and structural changes in electric and weak magnetic fields were studied by original method using the attenuation of surface acoustic wave (SAW) propagating along investigated liquid crystals.
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Three low volume concentrations (retrieve&_eid=1-s2.0-S0304885316320534&_mathId=si0009.gif&_user=111111111&_pii=S0304885316320534&_rdoc=1&_issn=03048853&md5=5368b00fd230c0d20cee11363166ec68" title="Click to view the MathML source">Φ=1×10−5, retrieve&_eid=1-s2.0-S0304885316320534&_mathId=si0010.gif&_user=111111111&_pii=S0304885316320534&_rdoc=1&_issn=03048853&md5=e7b7ffaa2ecd03e3e9549edf7cdf7453" title="Click to view the MathML source">1×10−4 and retrieve&_eid=1-s2.0-S0304885316320534&_mathId=si0011.gif&_user=111111111&_pii=S0304885316320534&_rdoc=1&_issn=03048853&md5=f854be72024b37b9ff50383d7aba283f" title="Click to view the MathML source">1×10−3) of spherical magnetic particles were added to liquid crystal during its isotropic phase.
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In contrast to undoped 6CHTB the distinctive SAW attenuation responses induced by both electric and magnetic fields in studied ferronematic liquid crystals have been observed suggesting both structural changes and the orientational coupling between both electric and magnetic moments of magnetic particles and the director of the liquid crystal.
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Observed results confirmed the significant influence of the presence of magnetic particles on the structural properties and following behavior of 6CHTB.