Relationship between the dielectric properties and the conductivity of Ba2FeNbO6

Sun, Xiaohong; Wang, C. C.; Wang, G. J.; Lei, Changmei; Li, T.; Mei, J. Y.; Cui, Yi

doi:10.1007/s10832-012-9759-7

Cited by 7 publications

(2 citation statements)

References 22 publications

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“…The origins of the high dielectric constant in the BFN system are ascribed to grain boundary effect, space charge effect, electron hoping, Maxwelle-Wagner type interfacial and dipolar polarizations [38][39][40][41][42]. The relaxor-like dielectric behavior observed in the BFN double perovskite ceramics is attributed to the thermally induced oxygen vacancies and enhanced electrons hopping between the localized carriers [43,44]. The magnetic properties of BFN double perovskite ceramics is also reported, which is an antiferromagnetic insulator with TN = 25 K and exhibits a weak ferromagnetic behavior at 5 K [45,46].…”

Section: Introductionmentioning

confidence: 99%

Optical Characterization of Double Perovskite Ba2FeNbO6 Powders Derived from Molten Salt Method

Meng

Pei

et al. 2020

Adv. Mater. Lett.

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Section: Introductionmentioning

confidence: 99%

Optical Characterization of Double Perovskite Ba2FeNbO6 Powders Derived from Molten Salt Method

Meng

Pei

et al. 2020

Adv. Mater. Lett.

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“…Recently, Pan et al [22] and Chung et al [23] reported on the dry reforming of methane with CO 2 to form syngas in the presence of BaFe 0.5 Nb 0.5 O 3 . Usually BaFe 0.5 Nb 0.5 O 3 is synthesized by the conventional mixed-oxide method leading to coarsegrained powders [13,15,17,18,24,25,26,27]. In addition, fine-grained powders for ceramics with small and tuneable grain sizes have been prepared.…”

Section: Introductionmentioning

confidence: 99%

Investigations of BaFe0.5Nb0.5O3 nano powders prepared by a low temperature aqueous synthesis and resulting ceramics

Köferstein

Ebbinghaus

2017

Journal of the European Ceramic Society

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A facile method to prepare nanoscaled BaFe 0.5 Nb 0.5 O 3 via synthesis in boiling NaOH solution is described herein. The nano-crystalline powder has a high specific surface area of 55 m 2 g −1 and a crystallite size of 15 nm. The as-prepared powder does not show any significant crystallite growth up to 700 °C. The activation energy of the crystallite growth process was calculated as 590 kJ mol −1. Dense ceramics can be obtained either after sintering at 1200 °C for 1 h or after two-step sintering at 1000 °C for 10 h. The average grain sizes of ceramic bodies can be tuned between 0.23 µm and 12 µm. The thermal expansion coefficient was determined as 11.4(3)⋅10 −6 K −1. The optical band gap varies between 2.90(5) and 2.63(3) eV. Magnetic measurements gave a Néel temperature of 20 K. Depending on the sintering regime, the ceramic samples reach permittivity values between 2800 and 137000 at RT and 1 kHz.

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Magnetic, optical, dielectric, and sintering properties of nano-crystalline BaFe0.5Nb0.5O3 synthesized by a polymerization method

2017

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Magnetic, optical, dielectric, and sintering properties of nano-crystalline BaFe0.5Nb0.5O3 synthesized by a polymerization method. CERAMICS 1 2 Magnetic, optical, dielectric, and sintering properties 3 of nano-crystalline BaFe 0.5 Nb 0.5 O 3 synthesized 4 by a polymerization method ABSTRACT 18A one-pot polymerization method using citric acid and glucose for the synthesis 19of nano-crystalline BaFe 0.5 Nb 0.5 O 3 is described. Phase evolution and the devel-20 opment of the crystallite size during decomposition of the (Ba,Fe,Nb)-gel were 21 examined up to 1100°C. Calcination at 850°C of the gel leads to a phase-pure 22

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Relationship between the dielectric properties and the conductivity of Ba2FeNbO6

Cited by 7 publications

References 22 publications

Optical Characterization of Double Perovskite Ba2FeNbO6 Powders Derived from Molten Salt Method

Optical Characterization of Double Perovskite Ba2FeNbO6 Powders Derived from Molten Salt Method

Investigations of BaFe0.5Nb0.5O3 nano powders prepared by a low temperature aqueous synthesis and resulting ceramics

Magnetic, optical, dielectric, and sintering properties of nano-crystalline BaFe0.5Nb0.5O3 synthesized by a polymerization method

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