ACADSTAFF UGM

CREATION
Title : Effects of annealing temperature on microstructural, magnetic properties, and specific absorption rate of Zn-Ni ferrite nanoparticles
Author :

Dr.Eng. Edi Suharyadi, S.Si., M.Eng. (1) SRI HANDIKA PRATIWI (2) I PT TEDY INDRAYANA (3) Takeshi Kato (4) Satoshi Iwata (5) Keisuke Ohto (6)
Date : 5 2021
Keyword : magnetic nanoparticles, annealing temperature, ferrites, microstructural, specific absorption rate magnetic nanoparticles, annealing temperature, ferrites, microstructural, specific absorption rate
Abstract : Zn-Ni ferrite nanoparticles were successfully synthesized by coprecipitation method. The samples were annealed at various temperatures, i.e., 200 °C, 400 °C, 600 °C, 800 °C, and 1000 °C. The nanoparticles have the mixed spinel phase structure as confirmed by the X-ray diffraction patterns. The crystallite size was 15.1 nm and increased to 25.1 nm after annealing at 1000 °C. Transmission electron microscope images showed that the annealed sample exhibited better dispersion and grain boundaries compared to the as-prepared sample. Fourier transform infra-red spectra showed the existence of vibrations at 378 cm?1 and 555 cm?1 , confirming bonding for mixed spinel ferrites. The hysteresis measurement by using vibrating sample magnetometer confirmed that the sample possessed soft magnetic properties with a coercivity of 45 Oe and increased after annealing. The saturation magnetization of the as-prepared sample was 11 emu g?1 , and increased to 58 emu g?1 after annealing at a temperature of 800 and 1000 °C. The specific absorption rate (SAR)with an alternating current magnetic field (50 Hz and 100 Oe) of Zn-Ni ferrite before and after annealing (at 800 °C)was 63.7 and 92.4 mW g?1 , respectively. The results showed that annealing temperature has a significant role in determining the microstructural, the magnetic properties and the SAR of the nanoparticles.
Group of Knowledge : Fisika
Original Language : English
Level : Internasional
Status :
Published
Document
No Title Document Type Action
1 L1_Jurnal_April_Edi-SUHARYADI.pdf
Document Type :
View
2 Effects of annealing temperature on microstructural, magnetic properties, and specific absorption rate of Zn-Ni ferrite nanoparticles.pdf
Document Type : [PAK] Cek Similarity
[PAK] Cek Similarity View
3 Bukti-Korespondesi_MRX_Edi_compressed.pdf
Document Type : [PAK] Bukti Korespondensi Penulis
[PAK] Bukti Korespondensi Penulis View
4 2021_MRX_Edi_Lengkap.pdf
Document Type : [PAK] Full Dokumen
[PAK] Full Dokumen View
5 2021mrxedilengkappdf.pdf
Document Type : [PAK] Full Dokumen
[PAK] Full Dokumen View