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<article article-type="conference-paper" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2016-7-4-624-628</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-1268</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Study of Faraday effect on Co1-xZnxFe2O4  nanoferrofluids</article-title><trans-title-group xml:lang="ru"><trans-title>Study of Faraday effect on Co1-xZnxFe2O4  nanoferrofluids</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Karthick</surname><given-names>R</given-names></name><name name-style="western" xml:lang="en"><surname>Karthick</surname><given-names>R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Department of Physics</p><p>Dindigul–624622</p></bio><bio xml:lang="en"><p>Department of Physics</p><p>Dindigul–624622</p></bio><email xlink:type="simple">karthickr4584@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ramachandran</surname><given-names>K.</given-names></name><name name-style="western" xml:lang="en"><surname>Ramachandran</surname><given-names>K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>School of Physics</p><p>Madurai–625021</p></bio><bio xml:lang="en"><p>School of Physics</p><p>Madurai–625021</p></bio><email xlink:type="simple">thirumalchandran@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Srinivasan</surname><given-names>R.</given-names></name><name name-style="western" xml:lang="en"><surname>Srinivasan</surname><given-names>R</given-names></name></name-alternatives><bio xml:lang="ru"><p>Department of Physic</p><p>Madurai–625009</p></bio><bio xml:lang="en"><p>Department of Physic</p><p>Madurai–625009</p></bio><email xlink:type="simple">rsrini2067@yahoo.co.in</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">PSNA College of Engineering and Technology<country>Индия</country></aff><aff xml:lang="en">PSNA College of Engineering and Technology<country>India</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Madurai Kamaraj University<country>Индия</country></aff><aff xml:lang="en">Madurai Kamaraj University<country>India</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Thiagarajar College<country>Индия</country></aff><aff xml:lang="en">Thiagarajar College<country>India</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>22</day><month>08</month><year>2025</year></pub-date><volume>7</volume><issue>4</issue><fpage>624</fpage><lpage>628</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Karthick R., Ramachandran K., Srinivasan r., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Karthick R., Ramachandran K., Srinivasan R.</copyright-holder><copyright-holder xml:lang="en">Karthick R., Ramachandran K., Srinivasan r.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://nanojournal.ifmo.ru/jour/article/view/1268">https://nanojournal.ifmo.ru/jour/article/view/1268</self-uri><abstract><p>Zinc doped cobalt ferriteCo1−xZnxFe2O4 nanoparticles (x = 0.1,  0.5, 0.9) were synthesized by chemical co-precipitation method. The crystallite size, which was calculated from the full width half maximum (FWHM) value of the strongest peak (311) plane using Scherer approximation, was found to decrease with higher zinc content. The surface morphology of the powder samples was obtained using transmission electron microscopy (TEM). Magnetic properties, such as Saturation magnetization (Ms), Remanent Magnetization (Mr ) and Coercivity of the powder samples, were measured using Vibrating Sample Magnetometer (VSM) at room temperature and were found to decrease with increased zinc content.  Aqueous ferrofluids prepared from the powder samples were subjected to magnetic field to measure their Faraday rotation. Faraday rotation of the ferrofluids was found to increase with applied magnetic field and decrease with increasing zinc composition.</p></abstract><trans-abstract xml:lang="ru"><p>Zinc doped cobalt ferriteCo1−xZnxFe2O4 nanoparticles (x = 0.1,  0.5, 0.9) were synthesized by chemical co-precipitation method. The crystallite size, which was calculated from the full width half maximum (FWHM) value of the strongest peak (311) plane using Scherer approximation, was found to decrease with higher zinc content. The surface morphology of the powder samples was obtained using transmission electron microscopy (TEM). Magnetic properties, such as Saturation magnetization (Ms), Remanent Magnetization (Mr ) and Coercivity of the powder samples, were measured using Vibrating Sample Magnetometer (VSM) at room temperature and were found to decrease with increased zinc content.  Aqueous ferrofluids prepared from the powder samples were subjected to magnetic field to measure their Faraday rotation. Faraday rotation of the ferrofluids was found to increase with applied magnetic field and decrease with increasing zinc composition.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>nanoferrofluid</kwd><kwd>vibrating sample magnetometer</kwd><kwd>faraday rotation</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nanoferrofluid</kwd><kwd>vibrating sample magnetometer</kwd><kwd>faraday rotation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Ibrahim Sharifi, Shokrollai H., Amiri S. Ferrite based magnetic nanofluids used in hyperthermia applications. Journal of Magnetism and Magnetic Materials, 2012, 324(6), P. 903–915.</mixed-citation><mixed-citation xml:lang="en">Ibrahim Sharifi, Shokrollai H., Amiri S. Ferrite based magnetic nanofluids used in hyperthermia applications. 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