Structural, thermal and electrical study of Ca2+, Sr 2+ Substituted BiFeO3 for IT-SOFC

Samita Thakur; O. P. Pandey; K. Singh

doi:10.1149/05701.2125ecst

Structural, thermal and electrical study of Ca²⁺, Sr ²⁺ Substituted BiFeO₃ for IT-SOFC

Samita Thakur, O. P. Pandey, K. Singh

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Bi_0.5A_0.5FeO₃ (A=Sr²⁺, Ca ²⁺) has been synthesized by solid state reaction method to investigate the effect of two different cations on structural, thermal and electrical properties of BiFeO₃. The samples were characterized by X-ray diffraction, thermogravimetry (TG), dilatometry, and impedance spectroscopy. All samples are mono-phasic and exhibit cubic symmetry (pm3m) as confirmed by Rietveld refinement. Bi_0.5A_0.5FeO₃ shows higher conductivity (∼ 1.71×10-² S/cm) as compared to Bi_0.5A_0.5FeO₃ (∼ 6.74×10 ^-3 S/cm). TG results indicate that Bi_0.5A _0.5FeO₃ is thermally more stable as compared to Sr ²⁺ doped system. Sr²⁺doped BiFeO₃ shows higher thermal expansion coefficient as compared to Ca2+ doped system.

Original language	English
Pages (from-to)	2125-2132
Number of pages	8
Journal	ECS Transactions
Volume	57
Issue number	1
DOIs	https://doi.org/10.1149/05701.2125ecst
State	Published - 2013
Externally published	Yes

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title = "Structural, thermal and electrical study of Ca2+, Sr 2+ Substituted BiFeO3 for IT-SOFC",

abstract = "Bi0.5A0.5FeO3 (A=Sr2+, Ca 2+) has been synthesized by solid state reaction method to investigate the effect of two different cations on structural, thermal and electrical properties of BiFeO3. The samples were characterized by X-ray diffraction, thermogravimetry (TG), dilatometry, and impedance spectroscopy. All samples are mono-phasic and exhibit cubic symmetry (pm3m) as confirmed by Rietveld refinement. Bi0.5A0.5FeO3 shows higher conductivity (∼ 1.71×10-2 S/cm) as compared to Bi0.5A0.5FeO3 (∼ 6.74×10 -3 S/cm). TG results indicate that Bi0.5A 0.5FeO3 is thermally more stable as compared to Sr 2+ doped system. Sr2+doped BiFeO3 shows higher thermal expansion coefficient as compared to Ca2+ doped system.",

author = "Samita Thakur and Pandey, {O. P.} and K. Singh",

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doi = "10.1149/05701.2125ecst",

language = "English",

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publisher = "Electrochemical Society, Inc.",

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T1 - Structural, thermal and electrical study of Ca2+, Sr 2+ Substituted BiFeO3 for IT-SOFC

AU - Thakur, Samita

AU - Pandey, O. P.

AU - Singh, K.

PY - 2013

Y1 - 2013

N2 - Bi0.5A0.5FeO3 (A=Sr2+, Ca 2+) has been synthesized by solid state reaction method to investigate the effect of two different cations on structural, thermal and electrical properties of BiFeO3. The samples were characterized by X-ray diffraction, thermogravimetry (TG), dilatometry, and impedance spectroscopy. All samples are mono-phasic and exhibit cubic symmetry (pm3m) as confirmed by Rietveld refinement. Bi0.5A0.5FeO3 shows higher conductivity (∼ 1.71×10-2 S/cm) as compared to Bi0.5A0.5FeO3 (∼ 6.74×10 -3 S/cm). TG results indicate that Bi0.5A 0.5FeO3 is thermally more stable as compared to Sr 2+ doped system. Sr2+doped BiFeO3 shows higher thermal expansion coefficient as compared to Ca2+ doped system.

AB - Bi0.5A0.5FeO3 (A=Sr2+, Ca 2+) has been synthesized by solid state reaction method to investigate the effect of two different cations on structural, thermal and electrical properties of BiFeO3. The samples were characterized by X-ray diffraction, thermogravimetry (TG), dilatometry, and impedance spectroscopy. All samples are mono-phasic and exhibit cubic symmetry (pm3m) as confirmed by Rietveld refinement. Bi0.5A0.5FeO3 shows higher conductivity (∼ 1.71×10-2 S/cm) as compared to Bi0.5A0.5FeO3 (∼ 6.74×10 -3 S/cm). TG results indicate that Bi0.5A 0.5FeO3 is thermally more stable as compared to Sr 2+ doped system. Sr2+doped BiFeO3 shows higher thermal expansion coefficient as compared to Ca2+ doped system.

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JO - ECS Transactions

JF - ECS Transactions

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Structural, thermal and electrical study of Ca2+, Sr 2+ Substituted BiFeO3 for IT-SOFC

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Structural, thermal and electrical study of Ca²⁺, Sr ²⁺ Substituted BiFeO₃ for IT-SOFC