بررسی تجربی اثر اندازهی بلورک بر ویژگیهای ساختاری و مغناطیسی نانوذرات گارنت ایتریوم آهن ساخته شده به روش سل ژل
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Abstract:
In this study, we have prepared nanopowders of Yttrium Iron Garnet (YIG). Phase formation and crystalline structure were investigated by X-ray diffraction (XRD) and IR spectroscopy. Room temperature saturation magnetizations (Ms) of the samples were evaluated using a vibrating samples magnetometer (VSM). The results show that the size of nanoparticles renge from 70 to 250 nm. The results of structure investigation show correlation between Lattice constant and particle size of samples. The Critical size was obtained about 200 nm.
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بررسی تجربی اثر اندازه ی بلورک بر ویژگی های ساختاری و مغناطیسی نانوذرات گارنت ایتریوم آهن ساخته شده به روش سل ژل
در این پژوهش نانوذرات گارنت ایتریوم آهن بهروش سل ژل تهیه شد. تشکیل فاز گارنت و ساختار بلورین این نانوذرات با پراشسنجی پرتو ایکس (xrd)، بیناب فوریه فروسرخ (ft-ir)و میکروسکوپ الکترونی روبشی (sem) بررسی شد. مغناطش نانوذرات با (vsm) اندازهگیری شد. نتایج پراش xrd نشان میدهد که اندازهی بلورکها در بازهی70 تا250 نانومتر است. همچنین ارتباط بین ثابت شبکه و اندازهی بلورکها مورد بررسی قرار گرفت. ...
full textاثرجانشانی سریوم بر ویژگیهای ساختاری و مغناطیسی نانوذرات گارنت ایتریوم آهن تهیهشده به روش سل- ژل
In this work, Ce-YIG nanoparticles with nominal composition of Y3-xCexFe5O12 (x = 0, 0.1, 0.3, 0.4, 0.5, 0.6, 0.7 and 0.8) were first fabricated by sol-gel method and then the influence of the cerium substitution on the structural and magnetic properties of garnet nanoparticles were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), fourier transform infrared (FT-IR)...
full textاثر جانشانی ساماریوم بر ویژگیهای ساختاری و مغناطیسی نانوذرات گارنت ایتریوم آهن تهیه شده به روش سل- ژل
In this work, samarium ion (Sm3+) substituted yttrium iron garnet nanoparticles Y3-xSmxFe5O12 (x=0.0, 0.2, 0.3) were fabricated by the sol-gel method. X-ray diffraction (XRD) patterns confirmed the pure garnet structure for all samples. The garnet phase were studied, using, Far-FTIR. The results of vibrating sample magnetometer (VSM) represents that saturation magnetization decrease with increa...
full textاثر جانشانی آلومینیوم بر ویژگیهای ساختاری و مغناطیسی نانوذرات گارنت ایتریوم آهن تهیه شده به روش سل- ژل
In this study, aluminum ion (Al3+) substituted yttrium iron garnet nanoparticles Y3AlxFe5-xO12 (x = 0.0, 0.2, 0.4) were fabricated by the sol-gel method. X-ray diffraction (XRD) patterns confirmed the pure garnet structure for all samples. The chemical bonds and the garnet phase were studied by using FT-IR, Far-FTIR. The cation distribution and the magnetic hyperfine parameters were obtained by...
full textاثر جانشانی آنتیموان بر ویژگی ساختاری و مغناطیسی گارنت ایتریوم آهن تهیهشده به روش سل ژل
In this study, antimony substituted yttrium iron garnet with a composition of (x = 0, 0.1, 0.2) nanoparticles were fabricated by Sol-Gel method. Garnet phase formation were investigated by X-Ray diffraction (XRD) and Fourier transform infrared spectroscopy (Far FT-IR). X-ray diffraction results show that the samples in addition to garnet phase has impurity phases of YIP, α-Fe2O3 and Sb2O4 whi...
full textتهیهی نانوذرات گارنت ایتریوم آهن (YIG) به روش سل-ژل و بررسی ویژگیهای مغناطیسی آن
In this work yttrium iron garnet (Y3Fe5O12 or YIG) nanoparticles have been prepared by sol-gel method, raw materials were dissolved in citric acid and warmed up and stirred to form a gel. Synthesized nanoparticles were characterized, using X-ray diffraction (XRD), FT-IR and TG-DTA methods. Magnetic properties of the nanoparticles were measured, using vibrating sample magnetometer (VSM) and Fara...
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Journal title
volume 22 issue 3
pages 535- 540
publication date 2014-10
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