کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5491288 | 1524798 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of spherical magnetic particles on liquid crystals behavior studied by surface acoustic waves
ترجمه فارسی عنوان
اثر ذرات مغناطیسی کروی بر رفتار بلورهای مایع مورد بررسی با امواج صوتی سطح
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کلمات کلیدی
فررونماتیک، کریستال مایع، ذرات مغناطیسی، تغییرات ساختاری موج صوتی سطحی،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
چکیده انگلیسی
The effect of spherical magnetic particles (Fe3O4) on liquid crystals (6CHBT) behavior and structural changes in electric and weak magnetic fields was studied by means of the attenuation of surface acoustic wave (SAW) of frequency 30 MHz propagating along ferronematic liquid crystals. Three low volume concentrations (Φ=1Ã10â5, 1Ã10â4 and 1Ã10â3) of spherical magnetic particles were added to liquid crystal during its isotropic phase. In contrast to undoped 6CHTB the distinctive SAW attenuation responses induced by both electric and magnetic fields in studied ferronematic liquid crystals below Fréedericksz transition have been observed suggesting both structural changes and the orientational coupling between magnetic moments of magnetic particles and the director of the liquid crystal. The geometrical re-ranking of magnetic particles was registered only for some orientations of magnetic field. Observed results confirmed the significant influence of the presence of magnetic particles on the structural properties and following behavior of 6CHTB.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 423, 1 February 2017, Pages 57-60
Journal: Journal of Magnetism and Magnetic Materials - Volume 423, 1 February 2017, Pages 57-60
نویسندگان
Peter Bury, Jozef KúdelÄÃk, Å tefan HardoÅ, Marek VeveriÄik, Peter KopÄanský, Milan Timko, Vlasta ZáviÅ¡ová,