Subsolidus phase relations in the BaTiO3TiO2 system

Negas, T.; Roth, Robert; Parker, H.S.; Minor, D. B.

doi:10.1016/0022-4596(74)90087-5

Cited by 176 publications

(69 citation statements)

References 11 publications

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“…[1][2][3][4][5] Our group 6,7) and Akishige et al 8) independently synthesized single-crystalline BT 2 and reported the significant ferroelectricity only in the bdirection. Since BT 2 can be easily decomposed into BaTiO 3 (BT) and Ba 6 Ti 17 O 40 (B 6 T 17 ) above 1500 K, large-scale crystalline BT 2 can be hardly prepared.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Properties of Poly- and Single-Crystalline BaTi2O5

Goto

2006

Mater. Trans.

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Non-oriented and (010) oriented poly-crystalline BaTi 2 O 5 (BT 2 ) was prepared by hot-pressing and arc-melting, respectively. The dielectric properties of poly-crystalline BT 2 were compared with those of single-crystalline BT 2 prepared by a floating zone method. The maximum permittivity of (010) oriented poly-crystalline BT 2 was 2000 at 720 K, whereas that of single-crystalline BT 2 was 6000 at the Curie temperature, T c (750 K). The permittivity of non-oriented poly-crystalline BT 2 was 30 to 300, having a small peak at 720 K. The tan of all specimens was 0.01 to 0.2 below T c and significantly increased with increasing temperature above T c . The electrical conductivity of (010) oriented poly-and single-crystalline BT 2 had almost same values, which were one order higher than that of non-oriented poly-crystalline BT 2 and (001) oriented single-crystalline BT 2 .

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Section: Introductionmentioning

confidence: 99%

Dielectric Properties of Poly- and Single-Crystalline BaTi2O5

Goto

2006

Mater. Trans.

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“…Many researchers have investigated on the BaO-TiO 2 phase diagram, 4,[7][8][9][10][11] because the BaO-TiO 2 system includes several useful dielectric and ferroelectric materials. In those papers, the thermal stability of BaTi 2 O 5 has been discussed.…”

Section: Introductionmentioning

confidence: 99%

“…In those papers, the thermal stability of BaTi 2 O 5 has been discussed. Figure 1 shows 4,[8][9][10][11][12] however, no electrical property of single crystalline BaTi 2 O 5 has been reported. In this study, single crystalline BaTi 2 O 5 specimens were first synthesized by a FZ method, and the relationship between crystal orientation and dielectric property was investigated.…”

Section: Introductionmentioning

confidence: 99%

Preparation of BaTi2O5 Single Crystal by a Floating Zone Method

2003

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Single crystalline BaTi 2 O 5 was prepared by a floating zone method. The single crystal was transparent having a (001) cleavage plane. The space group was C2, and the lattice parameters were a ¼ 1:6909ð9Þ nm, b ¼ 0:3937ð1Þ nm, c ¼ 0:9419ð4Þ nm and ¼ 103:12ð6Þ. The permittivity perpendicular to a (010) plane showed the maximum value of 20500 at 748 K. The permittivity perpendicular to (100) and (001) planes were about 140 and 70, respectively, independent of temperature.

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“…4,5) Recently, our research group 6) and Akishige et al 7) have independently synthesized single crystalline BT 2 and detected ferroelectricity in the b-direction. As single crystalline BT 2 has a high permittivity (20500) with a high Curie temperature (750 K), comparable to widely used PZT (Lead zirconium titanate), it is promising as a new lead-free high T c ferroelectric material.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Properties of Ba1−xCaxTi2O5 Prepared by Arc Melting

Yue

Goto

2009

Mater. Trans.

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b-axis-oriented CaO substituted polycrystalline BaTi 2 O 5 , Ba 1Àx Ca x Ti 2 O 5 (BCT 2 , x ¼ 0 to 0.10), was prepared by arc melting. The dielectric property of BCT 2 was investigated by an AC impedance method. The lattice parameters of BCT 2 decreased with increasing CaO content in the range up to around x ¼ 0:08. The remnant polarization (P r ) and coercive electric field (E c ) of polycrystalline BCT 2 at x ¼ 0:08 were 1:6 Â 10 À2 Cm À2 and 0:4 Â 10 6 Vm À1 , respectively. The P r of polycrystalline BCT 2 was larger than that of BaTi 2 O 5 (BT 2 , P r ¼ 0:9 Â 10 À2 Cm À2 ), while the E c of BCT 2 was smaller than that of polycrystalline BT 2 (E c ¼ 0:7 Â 10 6 Vm À1 ). The permittivity of BCT 2 showed the maximum value of 4950 at x ¼ 0:02 and a Curie temperature (T c ) of 736 K. The T c of BCT 2 decreased from 750 to 665 K with increasing CaO content from 0 to 0

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Subsolidus phase relations in the BaTiO3TiO2 system

Cited by 176 publications

References 11 publications

Dielectric Properties of Poly- and Single-Crystalline BaTi<SUB>2</SUB>O<SUB>5</SUB>

Dielectric Properties of Poly- and Single-Crystalline BaTi<SUB>2</SUB>O<SUB>5</SUB>

Preparation of BaTi<SUB>2</SUB>O<SUB>5</SUB> Single Crystal by a Floating Zone Method

Dielectric Properties of Ba<SUB>1−<I>x</I></SUB>Ca<I><SUB>x</SUB></I>Ti<SUB>2</SUB>O<SUB>5</SUB> Prepared by Arc Melting

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Subsolidus phase relations in the BaTiO3TiO2 system

Cited by 176 publications

References 11 publications

Dielectric Properties of Poly- and Single-Crystalline BaTi<SUB>2</SUB>O<SUB>5</SUB>

Dielectric Properties of Poly- and Single-Crystalline BaTi<SUB>2</SUB>O<SUB>5</SUB>

Preparation of BaTi<SUB>2</SUB>O<SUB>5</SUB> Single Crystal by a Floating Zone Method

Dielectric Properties of Ba<SUB>1&minus;<I>x</I></SUB>Ca<I><SUB>x</SUB></I>Ti<SUB>2</SUB>O<SUB>5</SUB> Prepared by Arc Melting

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Dielectric Properties of Ba<SUB>1−<I>x</I></SUB>Ca<I><SUB>x</SUB></I>Ti<SUB>2</SUB>O<SUB>5</SUB> Prepared by Arc Melting