Staff View: Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19

Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19

This paper investigates the effect of the ratio of ammonium nitrate (AN) on the structural, microstructural, magnetic, and alternating current (AC) conductivity properties of barium hexaferrite (BaFe12O19). The BaFe12O19 were prepared by using the salt melt method. The samples were synthesized using...

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Main Authors:	Azis, Raba’ah Syahidah, Che Muda, Nor Nadhirah, Hassan, Jumiah, Shaari, Abdul Halim, Ibrahim, Idza Riati, Mustaffa, Muhammad Syazwan, Sulaiman, Sakinah, Matori, Khamirul Amin, Yap, Wing Fen
Format:	Article
Language:	English
Published:	MDPI 2018
Online Access:	http://psasir.upm.edu.my/id/eprint/72444/1/Effect%20of%20Ratio%20in%20Ammonium%20Nitrate.pdf
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spelling	oai:psasir.upm.edu.my:72444 http://psasir.upm.edu.my/id/eprint/72444/ Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19 Azis, Raba’ah Syahidah Che Muda, Nor Nadhirah Hassan, Jumiah Shaari, Abdul Halim Ibrahim, Idza Riati Mustaffa, Muhammad Syazwan Sulaiman, Sakinah Matori, Khamirul Amin Yap, Wing Fen This paper investigates the effect of the ratio of ammonium nitrate (AN) on the structural, microstructural, magnetic, and alternating current (AC) conductivity properties of barium hexaferrite (BaFe12O19). The BaFe12O19 were prepared by using the salt melt method. The samples were synthesized using different powder-to-salt weight ratio variations (1:3, 1:4, 1:5, 1:6 and 1:7) of BaCO3 + Fe2O3 and ammonium nitrate salt. The NH4NO3 was melted on a hot plate at 170 °C. A mixture of BaCO3 and Fe2O3 were added into the NH4NO3 melt solution and stirred for several hours using a magnetic stirrer under a controlled temperature of 170 °C. The heating temperature was then increased up to 260 °C for 24 hr to produce an ash powder. The x-ray diffraction (XRD) results show the intense peak of BaFe12O19 for all the samples and the presence of a small amount of the impurity Fe2O3 in the samples, at a ratio of 1:5 and 1:6. From the Fourier transform infra-red (FTIR) spectra, the band appears at 542.71 cm−1 and 432.48 cm−1 , which corresponding to metal–oxygen bending and the vibration of the octahedral sites of BaFe12O19. The field emission scanning electron microscope (FESEM) images show that the grains of the samples appear to stick each other and agglomerate at different masses throughout the image with the grain size 5.26, 5.88, 6.14, 6.22, and 6.18 µm for the ratios 1:3, 1:4, 1:5, 1:6, and 1:7 respectively. From the vibrating sample magnetometer (VSM) analysis, the magnetic properties of the sample ratio at 1:3 show the highest value of coercivity Hc of 1317 Oe, a saturation magnetization Ms of 91 emu/g, and a remnant Mr of 44 emu/g, respectively. As the temperature rises, the AC conductivity is increases with an increase in frequency. MDPI 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/72444/1/Effect%20of%20Ratio%20in%20Ammonium%20Nitrate.pdf Azis, Raba’ah Syahidah and Che Muda, Nor Nadhirah and Hassan, Jumiah and Shaari, Abdul Halim and Ibrahim, Idza Riati and Mustaffa, Muhammad Syazwan and Sulaiman, Sakinah and Matori, Khamirul Amin and Yap, Wing Fen (2018) Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19. Materials, 11 (11). pp. 1-22. ISSN 1996-1944; ESSN: 1996-1944 https://www.mdpi.com/1996-1944/11/11/2190 10.3390/ma11112190
institution	UPM IR
collection	UPM IR
language	English
description	This paper investigates the effect of the ratio of ammonium nitrate (AN) on the structural, microstructural, magnetic, and alternating current (AC) conductivity properties of barium hexaferrite (BaFe12O19). The BaFe12O19 were prepared by using the salt melt method. The samples were synthesized using different powder-to-salt weight ratio variations (1:3, 1:4, 1:5, 1:6 and 1:7) of BaCO3 + Fe2O3 and ammonium nitrate salt. The NH4NO3 was melted on a hot plate at 170 °C. A mixture of BaCO3 and Fe2O3 were added into the NH4NO3 melt solution and stirred for several hours using a magnetic stirrer under a controlled temperature of 170 °C. The heating temperature was then increased up to 260 °C for 24 hr to produce an ash powder. The x-ray diffraction (XRD) results show the intense peak of BaFe12O19 for all the samples and the presence of a small amount of the impurity Fe2O3 in the samples, at a ratio of 1:5 and 1:6. From the Fourier transform infra-red (FTIR) spectra, the band appears at 542.71 cm−1 and 432.48 cm−1 , which corresponding to metal–oxygen bending and the vibration of the octahedral sites of BaFe12O19. The field emission scanning electron microscope (FESEM) images show that the grains of the samples appear to stick each other and agglomerate at different masses throughout the image with the grain size 5.26, 5.88, 6.14, 6.22, and 6.18 µm for the ratios 1:3, 1:4, 1:5, 1:6, and 1:7 respectively. From the vibrating sample magnetometer (VSM) analysis, the magnetic properties of the sample ratio at 1:3 show the highest value of coercivity Hc of 1317 Oe, a saturation magnetization Ms of 91 emu/g, and a remnant Mr of 44 emu/g, respectively. As the temperature rises, the AC conductivity is increases with an increase in frequency.
format	Article
author	Azis, Raba’ah Syahidah Che Muda, Nor Nadhirah Hassan, Jumiah Shaari, Abdul Halim Ibrahim, Idza Riati Mustaffa, Muhammad Syazwan Sulaiman, Sakinah Matori, Khamirul Amin Yap, Wing Fen
spellingShingle	Azis, Raba’ah Syahidah Che Muda, Nor Nadhirah Hassan, Jumiah Shaari, Abdul Halim Ibrahim, Idza Riati Mustaffa, Muhammad Syazwan Sulaiman, Sakinah Matori, Khamirul Amin Yap, Wing Fen Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19
author_facet	Azis, Raba’ah Syahidah Che Muda, Nor Nadhirah Hassan, Jumiah Shaari, Abdul Halim Ibrahim, Idza Riati Mustaffa, Muhammad Syazwan Sulaiman, Sakinah Matori, Khamirul Amin Yap, Wing Fen
author_sort	Azis, Raba’ah Syahidah
title	Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19
title_short	Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19
title_full	Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19
title_fullStr	Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19
title_full_unstemmed	Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19
title_sort	effect of ratio in ammonium nitrate on structural, microstructural, magnetic and ac conductivity properties of bafe12o19
publisher	MDPI
publishDate	2018
url	http://psasir.upm.edu.my/id/eprint/72444/1/Effect%20of%20Ratio%20in%20Ammonium%20Nitrate.pdf
_version_	1782758123218403328
score	12.933938

Effect of ratio in ammonium nitrate on structural, microstructural, magnetic and AC conductivity properties of BaFe12O19

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