Annealing Effects on the Physical and Magnetic Properties of Tb_1.5Y_1.5Fe₅O₁₂ Films Nanoparticles Prepared by Sol-Gel Method

Abstract:

Terbium –substituted yttrium iron garnet (Tb1.5Y1.5Fe5O12) films nanoparticles were successfully prepared by a sol-gel method. The films were deposited on the quartz substrate using spin coating technique. To study effect of annealing temperature, the annealing process was executed at 700, 800 and 900 °C in air for 2 hours. The X-ray diffraction (XRD) proved that the pure phase of garnet structure was detected for the film annealed at 900 °C. The lattice parameter increased with the increment of annealing temperature and the highest value of 12.35 Å was obtained at 900 °C. Field Emission Scanning Electron Microscope (FE-SEM) results showed that the particle size increased from 43nm to 56nm as annealing temperature increased from 700 to 900°C. The film’s thickness also affected by increasing of annealing temperature and become thin at 900 °C due to densification process occurred at high annealing temperature. The elemental compositions of the Tb1.5Y1.5Fe5O12 film were detected using an Energy Dispersive X-raySpectroscopy (EDX). Magnetic properties at room temperature were measured using a Vibrating Sample Magnetometer (VSM).The saturation magnetization Ms increased with the annealingtemperature and showed a high value of 104emu/cm3, but the coercivity Hc of the film was decreased due to the increment of the particle size. Normal 0 21 false false false MS X-NONE X-NONE MicrosoftInternetExplorer4 Terbium –substituted yttrium iron garnet (Tb_1.5Y_1.5Fe₅O₁₂) films nanoparticles were successfully prepared by a sol-gel method. The films were deposited on the quartz substrate using spin coating technique. To study effect of annealing temperature, the annealing process was executed at 700, 800 and 900 °C in air for 2 hours. The X-ray diffraction (XRD) proved that the pure phase of garnet structure was detected for the film annealed at 900 °C. The lattice parameter increased with the increment of annealing temperature and the highest value of 12.35 Å was obtained at 900 °C. Field Emission Scanning Electron Microscope (FE-SEM) results showed that the particle size increased from 43nm to 56nm as annealing temperature increased from 700 to 900 °C. The film’s thickness also affected by increasing of annealing temperature and become thin at 900 °C due to densification process occurred at high annealing temperature. The elemental compositions of the Tb_1.5Y_1.5Fe₅O₁₂ film were detected using an Energy Dispersive X-ray Spectroscopy (EDX). Magnetic properties at room temperature were measured using a Vibrating Sample Magnetometer (VSM).The saturation magnetization M_s increased with the annealing temperature and showed a high value of 104emu/cm³, but the coercivity H_c of the film was decreased due to the increment of the particle size. st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

• Periodical: Materials Science Forum (Volume 756)
• Pages: 91-98
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.756.91
• Online since: May 2013
• Authors: Ftema W. Aldbea, Noor Bahyah Ibrahim, Mustafa Hj. Abdullah
• Keywords: Garnet, Magnetic Property, Sol-Gel, Spin Coating

References

[1] S. Geller, M.A. Gillo, The crystal structure and ferrimagnetism of yttrium iron garnet,Y3Fe2(FeO4)3, Journal of Physics and Chemistry of Solids. 3(1957) 30-36.

DOI: 10.1016/0022-3697(57)90044-6

[2] D. Rodic, A. Szytula, Z.Tomkowicz, M. Guillot, H.l. Le Gal, Temperature dependence of lattice constant and thermal expantion coefficient of terbium-yttrium iron garnet, Journal of Magnetism and Magnetic Materials. 75 (1988) 79-87.

DOI: 10.1016/0304-8853(88)90123-0

[3] T.C. Mao, J.C. Chen, Influence of the addition of CeO2 on the microstructure and the magnetic properties of yttrium iron garnet ceramic, Journal of magnetism and magnetic materials. 302 (2006) 74–81.

DOI: 10.1016/j.jmmm.2005.08.018

[4] X.W. Zhang, Fabrication of crystalline bismuth-substituted yttrium iron garnet nanofibers via sol-gel and calcination-assisted electrospinning, Journal of Crystal Growth. 310 (2008) 3235-3239.

DOI: 10.1016/j.jcrysgro.2008.04.004

[5] X. Zhou, W. Cheng, F. Lin, X. Ma, W. Shi, Effect of post-annealing temperature on the microstructure and magnetic properties of Ce:YIG thin films deposited on Si substrates, Journal of Applied Surface Science. 253 (2006) 2108–2112.

DOI: 10.1016/j.apsusc.2006.04.002

[6] S. Ramadan, N.B. Ibrahim, M. Abdullah, F. Aldbea, The Physical Properties of Erbium-Doped Yttrium Iron Garnet Films Prepared by Sol-Gel Method, Journal of Nanomaterials. 2012 (2011) 1-5.

DOI: 10.1155/2012/524903

[7] K. Bouziane, A. Yousif, H.M. Widatallah, J. Amighian, Site occupancy and magnetic study of Al3+ and Cr3+ co-substituted Y3Fe5O12, Journal of Magnetisim and Magnetic Materials. 320 (2008) 2330– 2334.

DOI: 10.1016/j.jmmm.2008.04.163

[8] M.J. Jafelicei, R.H. Godoi, Preparation and characterization of sperical yttrium iron garnet via coprecipitation, Journal of Magnetism and Magnetic Materials. 226-230 (2001) 1421-1423.

DOI: 10.1016/s0304-8853(00)00996-3

[9] P. Vaqueiro, M.A. Lopez, J. Rivas, J.M. Greneche, Annealing dependence of magnetic propertiesin nanostructured particles of yttrium iron garnet prepared by citrate gel process, Journal of Magnetisim and Magnetic Materials. 169 (1997) 56-68.

DOI: 10.1016/s0304-8853(96)00728-7

[10] G. Vertesy, I. Tomas, Effect of heat treatment on domain -wall pinning sites in magnetic garnet films, Journal of Magnetisim and Magnetic Materials. 264 (2003) 214-220.

DOI: 10.1016/s0304-8853(03)00208-7

[11] S.S. Marins, T. Ogasawara, A. Oqasawara, Terbium- yttrium – iron garnet revisited, Journal of Alloy and Compounds. 436 (2007) 415-420.

DOI: 10.1016/j.jallcom.2006.11.114

[12] N.B. Ibrahim, F. Aldbea, M. Abdullah, Effects of annealing temperature on structure and magnetic properties of TbxY3-xFe5O12 (x=0.2 and x=0.4) thin films, Journal of Nanomaterials 2012. Article ID 154192 (2012).

[13] X. Zhou, F. Lin, X. Ma, W. Shi, Fabrication and magnetic properties of Ce1Y2Fe5O12 thin films on GGG and SiO2/Si substrats, Journal of Magn. Magn. Materials. 320 (2008) 1817-1821.

DOI: 10.1016/j.jmmm.2008.02.169

[14] M.-B. Park, N.-H. Cho, Structural and magnetic characteristics of yttrium iron garnets (YIG, Ce:YIG) films prepared by RF magnetron sputter techniques, Journal of Magnetism and magnetic materials. 231 (2001) 253-264.

DOI: 10.1016/s0304-8853(01)00068-3

[15] S. Hosseini, H.R. Vajargah, H. Madaah, Z.A. Nemati, Synthesis of nanocrystalline yttrium iron garnets by sol–gel combustion process: The influence of pH of precursor solution, Journal of Materials Science and Engineering B 129 (2006) 211-215.

DOI: 10.1016/j.mseb.2006.01.014

[16] D. Rodic, R. Tellgren, M. Guillot, The magnetic structure of Tb2.5Y0.5Fe5O12 and the magnetic form factor influence of Fe3+ ions, Journal of Magnetism and Magnetic Materials. 94 (1991) 260-266.

DOI: 10.1016/0304-8853(91)90086-p

[17] X. Haitao, Y. Hua, X. Wei, Y. Lianxiang, Magnetic properties of Bi-doped Y3Fe5O12 nanoparticles, Journal of Current Applied Physics. 8 (2008) 1-5.

[18] F.W. Aldbea, N.B. Ibrahim, M. Abdullah, R.E. Shaiboub, Structural and magnetic properties of TbxY3-xFe5O12 (0<x<0.8) thin film prepared via sol-gel method, Journal of Sol-Gel Science and Technology. 62 (2012) 483-489.

DOI: 10.1007/s10971-012-2752-4

[19] S.Hosseini, H.R. Vajargah, Hosseini. Madaah , Z.A. Nemati, Synthesis of nanocrystalline yttrium ron garnets by sol–gel combustion process: The influence of pH of precursor solution, Mater Sci & Eng B 129 (2006) 211-215.

DOI: 10.1016/j.mseb.2006.01.014

[20] S. Sakka, Sol-gel scince and technology processing charecterization and applications 1 ed., Kluwer acadimic publisher, New Yourk, 2004.

[21] P. Vaqueiro, M.P. Crosnier- Lopez, M.A. Lopez-Quintela, Synthesis and characterization of yttrium iron garnet nanoparticles, Journal of Solid State Chemistry. 126 (1996) 161-168.

DOI: 10.1006/jssc.1996.0324

[22] H.P. Klug, L.E. Alexannder, X-ray diffraction procedures for polycrystalline and amorphous materials 2nd ed., Wiley, New York, 1974.

[23] P. Ayyub, M. Multani, R. Vijayaraghavan, Anoumalus behaviour of the magnetic hyperfine field in the microcrystalline YFeO3-Fe2O3 mixed phase system, Journal of Physics Letter A. 119 (1986) 95.

DOI: 10.1016/0375-9601(86)90422-6

[24] P. Ayyub, M. Multani, R. Vijayaraghavan, Size- induced strucural phase transitions and hyperfine properties of microcrystalline Fe2O3, Journal of physics Letter C. 21 (1988) 2229.

DOI: 10.1088/0022-3719/21/11/014

[25] M. Rajendran, S. Deka, P.A. Joy, A.K. Bhattacharyb, Size-dependent magnetic properties of nanocrystalline yttrium iron garnet powders, Journal of Magnetism and Magnetic Materials. 301 (2006) 212-219.

DOI: 10.1016/j.jmmm.2005.06.027

[26] H.M. Fadlella, C.C. Tang, Preparation of Tb3+- activated Y3Al5O12 monocrystalline nanoparticles using solution combustion technique, Optical Materials. 31 (2008) 401-404.

DOI: 10.1016/j.optmat.2008.06.002

[27] V. Seema, S. Pradhan, R. Pasricha, S. Sainkar, P. Joy, A novel low- temperature synthesis of nanosized NiZn ferrite, Journal of The American Ceramic Society. 88 (2005) 2597-2599.

DOI: 10.1111/j.1551-2916.2005.00445.x

[28] M.P. Bole, D.S. Patil, Effect of annealing temperature on the optical constants of Zinc oxide films, Journal of Physics and Chemistry of Solids. 70 (2009) 466-471.

DOI: 10.1016/j.jpcs.2008.12.001

[29] R. Sanchez, J. Rivas, P. Vaqueiro, M.A. Lopez-Quintela, D. Caeiro, Particle size effects on magnetic properties of yttrium iron garnet prepared by a sol-gel method, Journal of Magnetism and Magnetic Materials. 247 (2002) 92-98.

DOI: 10.1016/s0304-8853(02)00170-1