Effect of aluminum substitution on structural and magnetic properties of yttrium iron garnet nanoparticles prepared by sol-gel method

Abstract

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 MÖssbauer spectroscopy and confirmed the VSM results. The results of vibrating sample magnetometer (VSM) show that saturation magnetization decrease with increasing aluminum ion concentration. These changes assigned to the Neel theory and the spin canting due to the reduction of superexchange interactions between iron ions in the octahedral and tetrahedral and octahedral sites.

Keywords


[1] Ristic M., Nowik I., Popovic S., Felner I., Music S., "Influence of synthesis procedure on the YIG formation'', Materials Letters 57 (2003) 2584-2590.

[2] Ravi B. G., Guo X. Z., Yan Q.Y., Gambino R. J., Sampath S., Parise J. B., "Phase evolution and magnetic properties of Al substituted yttrium iron garnet nanopowders and plasma-sprayed coatings", Surface and Coatings Technology 201 (2007) 7597-7605.

[3] Wang C. C., Yu W. T., "Synthesis of yttrium iron garnet using polymer–metal chelate precursor", Journal of Colloid and Interface Science 306 (2007) 241-247.

[4] Lee J. W., Oh J. H., "Magneto-optical properties of Bi-YIG nanoparticles dispersed in the organic binder", Journal of Magnetism and Magnetic Materials 272 (2004) 2230-2232.

[5] Di Biccari A., "Sol-gel processing of RxY3−xAlyFe5−yO12 magneto-optical films". M.S. thesis, Materials Science & Engineering Department, Blacksburg, Va, USA, 2002.

[6] Shea L. E., McKittrick J., Lopez O. A., Sluzky E., "Synthesis of red-emitting, small particle size luminescent oxides using an optimized combustion process", Journal of the American Ceramic Society 79 (12) (1996) 3257–3265.

[7] Menzer G., "Die kristall structure der granate", z. kristallogr 69 (1928) 300-396.

[8] http://panasonic.net/history/timecapsule/3/ natural/N_2_note.html.

[9] Kim C. S., Min B. K., Kim S. J., Yoon S. R., Uhm Y. R., "Crystallographic and magnetic properties of Y3Fe5-xAlxO12", Journal of Magnetism and Magnetic Materials 254–255 (2003) 553–555.

[10] AzadiMotlagh Z., Mozaffari M., Amighian J., "Preparation of nano-sized Al-substituted yttrium iron garnets by the mechanochemical method and investigation of their magnetic properties", Journal of Magnetism and Magnetic Materials 321 (2009) 1980–1984.

[11] Hofmeister A. M., Campbell K.R., "Infrared spectroscopy of yttrium aluminum, yttrium gallium and yttrium iron garnets", Journal of Applied Physics 72 (1992) 638–646.

[12] Hofmeister, A. M.. "Infrared microspectroscopy. In H.J. Humecki, Ed., Practical Guide to Infrared Spectroscopy, 2nd ed", (1995) p. 377–416. Marcel Dekker, New York.

[13] A Shaeel, Al-Thabait "Synthesis and characterization of a new cobalt poly- meric spinels", Commun. dela Facult´e des Sci. de l’Universit´e d’Ankara 49 (2003) 5–14.

[14] Hild E., Beregi E., "IR spectroscopic investigation of the garnet materials used in the microwave electronics", Chemical Engineering 30 (1986) 235–246.

[15] Lampman G. M., Pavia D. L., Kriz G.S.,"Introduction to spectroscopy: A guide for students of organic chemistry", Harcourt Brace College Publishers (1996) 110-115.

[16] نیایی فر. م، خلفی. ن، حسن پور. ا.، "اثر جانشانی سریوم بر ویژگی های ساختاری و مغناطیسی نانوذرات گارنت ایتریوم آهن به روش سل ژل"، مجله بلورشناسی و کانی شناسی ایران، شماره 2 (1392)، ص190- 183.

[17] Watsonr E., Freeman A. J., "Origin of Effective Fields in Magnetic Materials", Physical Review 123 (1961) 2027-2047.

[18] Nagle D. E, Frauenfelder H., Taylor R. D., Cochran D. R. F., Matthias B.T.,"Temperature Dependence of the Internal Field in Ferromagnets", Physical Review Letters 5(1960) 364 -365.

[19] Dionne G. F., "Molecular Field Coefficients of Substituted Yttrium Iron Garnets", Journal of Applied Physics 41-12 (1970) 4874-4881.

[20] Chen Y. L., Yang D. P., "Mossbauer Effect in Lattice Dynamics", WILEY-VCH Verlag GmbH KGaA, Weinheim and Co. KGaA (2007) 35-37.

[21] Thongmee S., Winotai P., Tang I.M., "Local field fluctuations in the substituted aluminum iron garnets,Y3Fe5−xAlxO12", Solid State Communications 109 (1999) 471-476.