Crystal Structure and Magnetic Properties of Zn Doped Barium M-Hexaferrite

Umi Nuraini; Lita Amalia; Kurniawati C. Rosyidah; Mochammad Zainuri

doi:10.4028/www.scientific.net/AMR.1112.19

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1112Crystal Structure and Magnetic Properties of Zn...

Crystal Structure and Magnetic Properties of Zn Doped Barium M-Hexaferrite

Abstract:

Synthesis of Zn doped Barium M-Hexaferrite (BaFe_12-xZn_xO₁₉) has been performed by co-precipitation method. The purified iron sand from Tulungagung is used as a precursor of Fe₃O₄. Synthesis of Zn doped Barium M-Hexaferrite (BaFe_12-xZn_xO₁₉) with variations of x = 0.3, 0.5, and 0.7 wt % has been calcined at temperatures of 1000°C for 5 hours. Ion Zn²⁺ (with 0 ≤ x ≤ 0.7 wt %) does not change the crystal structure of Barium M-Hexaferrite (BaM), but give a slight displacement of the peak position of the diffraction pattern. SEM figures showed that Zn doped Barium M-Hexaferrite (BaFe_12-xZn_xO₁₉) have a hexagonal structure, similar to BaM structure. Doping of Zn has changed the magnetic properties of Barium M-Hexaferrit (BaM), from hard magnetic become soft magnetic. Barium M-Hexaferrit (BaM) has a value of Coercivity Field (H_c) and Remanence Magnetization (M_r) is 0.03734 T and 8.334 emu/g. At variation x = 0.3, the Remanence Magnetization (M_r) reaches the highest value. At this point, a value of Coercivity Field (H_c) and Remanence Magnetization (M_r) is 0.0506 T and 14.782 emu/gram respectively.

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Periodical:

Advanced Materials Research (Volume 1112)

Pages:

19-22

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1112.19

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Online since:

July 2015

Authors:

Umi Nuraini, Lita Amalia, Kurniawati C. Rosyidah, Mochammad Zainuri

Keywords:

Barium M-Hexaferrite, Coprecipitation Method, Crystal Structure, Magnetic Property

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