Anisotropic ferroelectric properties of epitaxially twinned Bi 3.25La0.75Ti3O12 thin films grown with three different orientations

Ho Nyung Lee; Dietrich Hesse

doi:10.1063/1.1447321

Anisotropic ferroelectric properties of epitaxially twinned Bi _3.25La_0.75Ti₃O₁₂ thin films grown with three different orientations

Ho Nyung Lee
, Dietrich Hesse

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

143 Scopus citations

Abstract

Epitaxially twinned (001)-, (118)-, and (104)-oriented La-substituted Bi₄Ti₃O₁₂ (BLT) ferroelectric films have been grown by pulsed laser deposition on (001)-, (011)-, and (111)-oriented SrTiO₃ single-crystal substrates, respectively, covered with SrRuO₃. Well-defined (001)-oriented BLT films were grown at a substrate temperature as low as 600°C. By x-ray diffraction characterization it has been found that the low-index three-dimensional epitaxial orientation relationship BLT(001)SrRuO₃(001)SrTiO₃(001); BLT[11̄0]SrRuO₃[100]SrTiO₃[100] is valid for all epitaxially twinned BLT thin films grown on SrRuO₃-covered SrTiO ₃ substrates in spite of their different orientations. The (104)-oriented BLT films showed an about 1.5 times higher remanent polarization (2P_r=31.9μC/cm²) than the (118)-oriented BLT films (2P_r=20.7μC/cm²), while (001)-oriented BLT films revealed only a small polarization component (2P_r=1.1μC/cm ²), thus demonstrating the ferroelectric anisotropy.

Original language	English
Pages (from-to)	1040-1042
Number of pages	3
Journal	Applied Physics Letters
Volume	80
Issue number	6
DOIs	https://doi.org/10.1063/1.1447321
State	Published - Feb 11 2002
Externally published	Yes

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title = "Anisotropic ferroelectric properties of epitaxially twinned Bi 3.25La0.75Ti3O12 thin films grown with three different orientations",

abstract = "Epitaxially twinned (001)-, (118)-, and (104)-oriented La-substituted Bi4Ti3O12 (BLT) ferroelectric films have been grown by pulsed laser deposition on (001)-, (011)-, and (111)-oriented SrTiO3 single-crystal substrates, respectively, covered with SrRuO3. Well-defined (001)-oriented BLT films were grown at a substrate temperature as low as 600°C. By x-ray diffraction characterization it has been found that the low-index three-dimensional epitaxial orientation relationship BLT(001)SrRuO3(001)SrTiO3(001); BLT[1{\=1}0]SrRuO3[100]SrTiO3[100] is valid for all epitaxially twinned BLT thin films grown on SrRuO3-covered SrTiO 3 substrates in spite of their different orientations. The (104)-oriented BLT films showed an about 1.5 times higher remanent polarization (2Pr=31.9μC/cm2) than the (118)-oriented BLT films (2Pr=20.7μC/cm2), while (001)-oriented BLT films revealed only a small polarization component (2Pr=1.1μC/cm 2), thus demonstrating the ferroelectric anisotropy.",

author = "Lee, \{Ho Nyung\} and Dietrich Hesse",

year = "2002",

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doi = "10.1063/1.1447321",

language = "English",

volume = "80",

pages = "1040--1042",

journal = "Applied Physics Letters",

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T1 - Anisotropic ferroelectric properties of epitaxially twinned Bi 3.25La0.75Ti3O12 thin films grown with three different orientations

AU - Lee, Ho Nyung

AU - Hesse, Dietrich

PY - 2002/2/11

Y1 - 2002/2/11

N2 - Epitaxially twinned (001)-, (118)-, and (104)-oriented La-substituted Bi4Ti3O12 (BLT) ferroelectric films have been grown by pulsed laser deposition on (001)-, (011)-, and (111)-oriented SrTiO3 single-crystal substrates, respectively, covered with SrRuO3. Well-defined (001)-oriented BLT films were grown at a substrate temperature as low as 600°C. By x-ray diffraction characterization it has been found that the low-index three-dimensional epitaxial orientation relationship BLT(001)SrRuO3(001)SrTiO3(001); BLT[11̄0]SrRuO3[100]SrTiO3[100] is valid for all epitaxially twinned BLT thin films grown on SrRuO3-covered SrTiO 3 substrates in spite of their different orientations. The (104)-oriented BLT films showed an about 1.5 times higher remanent polarization (2Pr=31.9μC/cm2) than the (118)-oriented BLT films (2Pr=20.7μC/cm2), while (001)-oriented BLT films revealed only a small polarization component (2Pr=1.1μC/cm 2), thus demonstrating the ferroelectric anisotropy.

AB - Epitaxially twinned (001)-, (118)-, and (104)-oriented La-substituted Bi4Ti3O12 (BLT) ferroelectric films have been grown by pulsed laser deposition on (001)-, (011)-, and (111)-oriented SrTiO3 single-crystal substrates, respectively, covered with SrRuO3. Well-defined (001)-oriented BLT films were grown at a substrate temperature as low as 600°C. By x-ray diffraction characterization it has been found that the low-index three-dimensional epitaxial orientation relationship BLT(001)SrRuO3(001)SrTiO3(001); BLT[11̄0]SrRuO3[100]SrTiO3[100] is valid for all epitaxially twinned BLT thin films grown on SrRuO3-covered SrTiO 3 substrates in spite of their different orientations. The (104)-oriented BLT films showed an about 1.5 times higher remanent polarization (2Pr=31.9μC/cm2) than the (118)-oriented BLT films (2Pr=20.7μC/cm2), while (001)-oriented BLT films revealed only a small polarization component (2Pr=1.1μC/cm 2), thus demonstrating the ferroelectric anisotropy.

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U2 - 10.1063/1.1447321

DO - 10.1063/1.1447321

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AN - SCOPUS:79956046437

SN - 0003-6951

VL - 80

SP - 1040

EP - 1042

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 6

ER -

Anisotropic ferroelectric properties of epitaxially twinned Bi _3.25La_0.75Ti₃O₁₂ thin films grown with three different orientations

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