Improvement of ferroelectric fatigue endurance in multiferroic (Ba0.5Sr0.5)TiO3/(Bi1.05La0.05)FeO3/(Ba0.5Sr0.5)TiO3 sandwich structures

J. Miao; B.P. Zhang; Khian-Hooi Chew; Y. Wang

doi:10.1063/1.2841672

Improvement of ferroelectric fatigue endurance in multiferroic (Ba_0.5Sr_0.5)TiO₃/(Bi_1.05La_0.05)FeO₃/(Ba_0.5Sr_0.5)TiO₃ sandwich structures

J. Miao, B.P. Zhang, Khian-Hooi Chew, Y. Wang

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

25 Citations (Scopus)

Abstract

We report the improved ferroelectric properties in dielectric/multiferroic/dielectric sandwich structures composed of Ba_0.5Sr_0.5TiO₃ (BST) and Bi_1.05La_0.05FeO₃ (BLF). Compared with the single BLF film, the trilayer structures exhibit a lower dielectric loss and weaker frequency dependence of dielectric properties. At room temperature, the remnant polarization and saturation polarization of the trilayer structures are 34.3 and 46.9 μC/cm², respectively. More interestingly, the polarization of BST/BLF/BST trilayer exhibits a fatigue-free characteristic of up to 10⁹ switching cycles. Applying Dawber’s model, the concentration of oxygen vacancies and barrier energy of oxygen vacancies migration in BST/BLF/BST trilayer are calculated as 6.1×10¹⁷ cm^-3 and 1.33 eV, respectively.

Original language	English
Pages (from-to)	ARTN 062902
Journal	Applied Physics Letters
Volume	92
Issue number	6
DOIs	https://doi.org/10.1063/1.2841672
Publication status	Published - 2008

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@article{4f836e4bde4b4c438b719a3474cc17d0,

title = "Improvement of ferroelectric fatigue endurance in multiferroic (Ba0.5Sr0.5)TiO3/(Bi1.05La0.05)FeO3/(Ba0.5Sr0.5)TiO3 sandwich structures",

abstract = "We report the improved ferroelectric properties in dielectric/multiferroic/dielectric sandwich structures composed of Ba0.5Sr0.5TiO3 (BST) and Bi1.05La0.05FeO3 (BLF). Compared with the single BLF film, the trilayer structures exhibit a lower dielectric loss and weaker frequency dependence of dielectric properties. At room temperature, the remnant polarization and saturation polarization of the trilayer structures are 34.3 and 46.9 μC/cm2, respectively. More interestingly, the polarization of BST/BLF/BST trilayer exhibits a fatigue-free characteristic of up to 109 switching cycles. Applying Dawber{\textquoteright}s model, the concentration of oxygen vacancies and barrier energy of oxygen vacancies migration in BST/BLF/BST trilayer are calculated as 6.1×1017 cm-3 and 1.33 eV, respectively.",

author = "J. Miao and B.P. Zhang and Khian-Hooi Chew and Y. Wang",

year = "2008",

doi = "10.1063/1.2841672",

language = "English",

volume = "92",

pages = "ARTN 062902",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "6",

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TY - JOUR

T1 - Improvement of ferroelectric fatigue endurance in multiferroic (Ba0.5Sr0.5)TiO3/(Bi1.05La0.05)FeO3/(Ba0.5Sr0.5)TiO3 sandwich structures

AU - Miao, J.

AU - Zhang, B.P.

AU - Chew, Khian-Hooi

AU - Wang, Y.

PY - 2008

Y1 - 2008

N2 - We report the improved ferroelectric properties in dielectric/multiferroic/dielectric sandwich structures composed of Ba0.5Sr0.5TiO3 (BST) and Bi1.05La0.05FeO3 (BLF). Compared with the single BLF film, the trilayer structures exhibit a lower dielectric loss and weaker frequency dependence of dielectric properties. At room temperature, the remnant polarization and saturation polarization of the trilayer structures are 34.3 and 46.9 μC/cm2, respectively. More interestingly, the polarization of BST/BLF/BST trilayer exhibits a fatigue-free characteristic of up to 109 switching cycles. Applying Dawber’s model, the concentration of oxygen vacancies and barrier energy of oxygen vacancies migration in BST/BLF/BST trilayer are calculated as 6.1×1017 cm-3 and 1.33 eV, respectively.

AB - We report the improved ferroelectric properties in dielectric/multiferroic/dielectric sandwich structures composed of Ba0.5Sr0.5TiO3 (BST) and Bi1.05La0.05FeO3 (BLF). Compared with the single BLF film, the trilayer structures exhibit a lower dielectric loss and weaker frequency dependence of dielectric properties. At room temperature, the remnant polarization and saturation polarization of the trilayer structures are 34.3 and 46.9 μC/cm2, respectively. More interestingly, the polarization of BST/BLF/BST trilayer exhibits a fatigue-free characteristic of up to 109 switching cycles. Applying Dawber’s model, the concentration of oxygen vacancies and barrier energy of oxygen vacancies migration in BST/BLF/BST trilayer are calculated as 6.1×1017 cm-3 and 1.33 eV, respectively.

U2 - 10.1063/1.2841672

DO - 10.1063/1.2841672

M3 - Article

VL - 92

SP - ARTN 062902

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 6

ER -

Improvement of ferroelectric fatigue endurance in multiferroic (Ba0.5Sr0.5)TiO3/(Bi1.05La0.05)FeO3/(Ba0.5Sr0.5)TiO3 sandwich structures

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Improvement of ferroelectric fatigue endurance in multiferroic (Ba_0.5Sr_0.5)TiO₃/(Bi_1.05La_0.05)FeO₃/(Ba_0.5Sr_0.5)TiO₃ sandwich structures