Formation mechanism of barium titanate by thermal decomposition of barium titanyl oxalate

Jung, Woong; Min, Bong‐Ki; Park, Ji-Ho; Yoon, Dang-Hyok

doi:10.1016/j.ceramint.2010.09.056

Cited by 10 publications

(3 citation statements)

References 26 publications

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“…Various technologically important materials are prepared from the oxalate compounds as precursors. For instance BaTiO 3 , a ferroelectric material, is prepared from the thermal decomposition of barium titanyl oxalate [5]. Ni-Co-Zn ferrites have been synthesized by an oxalate precursor method [6].…”

Section: Introductionmentioning

confidence: 99%

Single crystal growth and characterization of lanthanum–neodymium oxalate octahydrate

Want¹

2011

Journal of Crystal Growth

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Section: Introductionmentioning

confidence: 99%

Single crystal growth and characterization of lanthanum–neodymium oxalate octahydrate

Want¹

2011

Journal of Crystal Growth

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“…In contrast to BT thin films, which at similar deposition and annealing conditions crystallize in columnar microstructure, the BZT-BCT-0.2 M films annealed at 800 and 850 °C have fine equiaxed grains. Studies of BT precursors revealed that the thermal decomposition was concluded at about 800 °C . In comparison, carbonaceous residues were detected in a BZT-BCT precursor up to about 1000 °C…”

Section: Results and Discussionmentioning

confidence: 99%

Engineering the Microstructure and Functional Properties of 0.5Ba(Zr_0.2Ti_0.8)O₃-0.5(Ba_0.7Ca_0.3)TiO₃ Thin Films

Konsago,

Žiberna,

Matavž

et al. 2024

ACS Appl. Electron. Mater.

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Lead-free piezoelectric 0.5Ba(Zr 0.2 Ti 0.8 )O 3 -0.5(Ba 0.7 Ca 0.3 )TiO 3 (BZT−BCT) thin films deposited by chemical solution deposition on platinized silicon substrates using ethylene glycol and ethanol solvents for alkaline-earth carboxylates and transition-metal alkoxides, respectively, are studied. Undoped and manganese-doped BZT-BCT films prepared by repeated deposition of a 0.1 M precursor solution and multistep annealing at 850 °C until reaching the thickness of about 120 nm exhibit a predominantly columnar microstructure with preferential (111) orientation of the perovskite phase. The Mn-doped films' room-temperature permittivity is about 670 at 1 kHz, which is ≈30% higher than the permittivity of their undoped counterparts at the same frequency and temperature while maintaining a similar tan δ ≈ 0.02. Mn-doping effectively reduces the leakage of BZT-BCT films, contributing to a saturated ferroelectric hysteresis loop with a remnant polarization of 5 μC cm −2 and a coercive field of 80 kV cm −1 . The maximum polarization and recoverable energy storage density are about 32 μC cm −2 and 10 J cm −3 , respectively, with 69% efficiency at 1160 kV cm −1 . The energy-storage properties remain almost unaffected after 2 million cycles at a field of 800 kV cm −1 . The piezoelectric d 33 coefficient measured by double-beam laser interferometry is about 20 pm V −1, while the corrected value of d 33 ≈ 34 pm V −1 taking into account the ratio of the electrode size to substrate thickness being equal to unity.

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“…Of particular interest is the topotactic dehydration of Ba(C 2 O 4 )(H 2 C 2 O 4 )·2H 2 O to yield the polymorphs α-Ba(C 2 O 4 )(H 2 C 2 O 4 ) and β-Ba(C 2 O 4 )(H 2 C 2 O 4 ), which serves as a model system for this type of reaction [6,7]. Barium oxalate is used to prepare barium titanyl oxalate, which is an important molecular precursor to barium titanate, BaTiO 3 [8]. A more exotic application for barium oxalates is to impart a green color to pyrotechnics [9].…”

Section: Introductionmentioning

confidence: 99%

Barium Oxalates Combined with Oxo-Anions and Organic Cations: Syntheses and Structures of Ba2(C2O4)(H2PO3)2 and C2H10N2·Ba(H2O)2(HC2O4)4

2011

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Abstract:The syntheses and single-crystal structures of Ba 2 (C 2 O 4 )(H 2 PO 3 ) 2 (1) and C 2 H 10 N 2 ·Ba(H 2 O) 2 (HC 2 O 4 ) 4 (2) are described. Compound 1 is a three-dimensional mixedanion framework containing BaO 9 coordination polyhedra, which approximate to monocapped square anti-prisms: the connectivity of the BaO 9 units via edges and triangular faces leads to a sheet structure. The oxalate ion in 1 is substantially twisted about its C-C bond [dihedral angle between the CO 2 groups = 33.8 (3)

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Formation mechanism of barium titanate by thermal decomposition of barium titanyl oxalate

Cited by 10 publications

References 26 publications

Single crystal growth and characterization of lanthanum–neodymium oxalate octahydrate

Single crystal growth and characterization of lanthanum–neodymium oxalate octahydrate

Engineering the Microstructure and Functional Properties of 0.5Ba(Zr_0.2Ti_0.8)O₃-0.5(Ba_0.7Ca_0.3)TiO₃ Thin Films

Barium Oxalates Combined with Oxo-Anions and Organic Cations: Syntheses and Structures of Ba2(C2O4)(H2PO3)2 and C2H10N2·Ba(H2O)2(HC2O4)4

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Formation mechanism of barium titanate by thermal decomposition of barium titanyl oxalate

Cited by 10 publications

References 26 publications

Single crystal growth and characterization of lanthanum–neodymium oxalate octahydrate

Single crystal growth and characterization of lanthanum–neodymium oxalate octahydrate

Engineering the Microstructure and Functional Properties of 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 Thin Films

Barium Oxalates Combined with Oxo-Anions and Organic Cations: Syntheses and Structures of Ba2(C2O4)(H2PO3)2 and C2H10N2·Ba(H2O)2(HC2O4)4

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Engineering the Microstructure and Functional Properties of 0.5Ba(Zr_0.2Ti_0.8)O₃-0.5(Ba_0.7Ca_0.3)TiO₃ Thin Films