Temperature dependence of dielectric properties for BFO-BTO-BZT ceramics

ผู้แต่ง

  • Sujitra Unruan Faculty of Engineering and Architecture, Rajamangala University of Technology Isan
  • Muangjai Unruan Faculty of Sciences and Liberal Arts, Rajamangala University of Technology Isan
  • Rattikorn Yimnirun School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology

คำสำคัญ:

BFO-BTO-BZT, Ferromagnetism, Dielectric properties

บทคัดย่อ

In this work, bismuth ferrite-barium titanate-barium zirconate titanate (BFO-BTO-BZT) ceramics were prepared using conventional solid state reaction method. The (1-x)BiFeO3-xBaTiO3 at x = 0.24-0.30 and Ba(Zr,Ti)O3 (Zr = 0.5) systems were separately prepared and calcined at 800 and 1250oC, respectively. All pallets were sintered at temperature of 1100oC. After that, the relationship between phase formation, dielectric and magnetic properties were examined. The XRD patterns revealed that more structural symmetry could be observed in all single-phase perovskite ceramics when more BTO concentration was added. The 0.75(0.70BFO-0.30BTO)-0.25BZT ceramic showed highest dielectric constant with high loss measured at low frequency observed, possibly due to space charges, interfacial and dipolar polarizations. The temperature-dependent dielectric properties of BFO-BTO-BZT solid solutions were measured in TN temperature range. It was found that the addition of BTO content affected the position of TN.  Especially, the BFO-BTO-BZT solid solutions successfully improved the magnetic properties of BFO-BTO with typical ferromagnetic hysteresis loops. The maximum Mr with 0.1632 emu·g-1 was observed in 0.75(0.72BFO-0.28BTO)-0.25BZT sample.

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ดาวน์โหลด

เผยแพร่แล้ว

2019-01-10

วิธีการอ้างอิง

[1]
S. . Unruan, M. Unruan, และ R. Yimnirun, “Temperature dependence of dielectric properties for BFO-BTO-BZT ceramics”, J Met Mater Miner, ปี 28, ฉบับที่ 2, ม.ค. 2019.

ฉบับ

ปีที่ 28 ฉบับที่ 2 (2018)

บท

Original Research Articles

การอนุญาต

ลิขสิทธิ์ (c) 2018 Journal of Metals, Materials and Minerals

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