Enhancement of polarization property of PZT film by ion-substitution using rare-earth elements

Hiroshi Nakakt; Hiroshi Uchida; Ken Nishida; Minoru Osada; Hiroshi Funakubo; Takashi Katoda; Seiichiro Koda

doi:10.1143/JJAP.44.6905

Enhancement of polarization property of PZT film by ion-substitution using rare-earth elements

Hiroshi Nakakt, Hiroshi Uchida^*, Ken Nishida, Minoru Osada, Hiroshi Funakubo, Takashi Katoda, Seiichiro Koda

^*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

Rare-earth-substituted lead zirconate titanate thin films were synthesized to improve the ferroelectric properties of lead zirconate titanate through the enhancement of its crystal anisotropy. Thin films of Pb_1.00-(3x/2)o- RE_x(Zr_0.40Ti_0.60)O₃ [RE-PZT(A)] and Pb_1.00RE_x(Zr_0.40T_i0.60) _1-(3x/4)O₃ [RE-PZT(B)] with RE = La or Dy were deposited on (111)Pt/Ti/SiO₂/(100)Si substrates by chemical solution deposition (CSD). Rare-earth-substitution did not affect the crystal orientation of the PZT-based films where the PZT(111) plane was oriented along the surface-normal direction. Dy³⁺ substitution based on DyPZT(B) up to x = 0.02 enhanced the crystal anisotropy (c/a) and remanent polarization (P_r) of PZT films simultaneously, while both c/a and P_r values of Dy-PZT(A) decreased as x increased continuously. On the other hand, La ³⁺ substitution degraded the ferroelectric properties gradually in both the case of La-PZT(A) and (B). The Dy³⁺ ion could be substituted for a B-site in a PZT crystal preferentially, and that promoted the crystal anisotropy and the ferroelectric properties of PZT films.

Original language	English
Pages (from-to)	6905-6909
Number of pages	5
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	44
Issue number	9 B
DOIs	https://doi.org/10.1143/JJAP.44.6905
Publication status	Published - 2005 Sept 22
Externally published	Yes

Keywords

Chemical solution deposition
Dysprosium
Ferroelectrics
Ion substitution
Lanthanum
Lead zirconate titanate
P-E hysteresis loop
Raman spectrum
Rare earths

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1143/JJAP.44.6905

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@article{ac7087dfbd5f4f14830d8925a63b706e,

title = "Enhancement of polarization property of PZT film by ion-substitution using rare-earth elements",

abstract = "Rare-earth-substituted lead zirconate titanate thin films were synthesized to improve the ferroelectric properties of lead zirconate titanate through the enhancement of its crystal anisotropy. Thin films of Pb1.00-(3x/2)o- REx(Zr0.40Ti0.60)O3 [RE-PZT(A)] and Pb1.00REx(Zr0.40Ti0.60) 1-(3x/4)O3 [RE-PZT(B)] with RE = La or Dy were deposited on (111)Pt/Ti/SiO2/(100)Si substrates by chemical solution deposition (CSD). Rare-earth-substitution did not affect the crystal orientation of the PZT-based films where the PZT(111) plane was oriented along the surface-normal direction. Dy3+ substitution based on DyPZT(B) up to x = 0.02 enhanced the crystal anisotropy (c/a) and remanent polarization (Pr) of PZT films simultaneously, while both c/a and Pr values of Dy-PZT(A) decreased as x increased continuously. On the other hand, La 3+ substitution degraded the ferroelectric properties gradually in both the case of La-PZT(A) and (B). The Dy3+ ion could be substituted for a B-site in a PZT crystal preferentially, and that promoted the crystal anisotropy and the ferroelectric properties of PZT films.",

keywords = "Chemical solution deposition, Dysprosium, Ferroelectrics, Ion substitution, Lanthanum, Lead zirconate titanate, P-E hysteresis loop, Raman spectrum, Rare earths",

author = "Hiroshi Nakakt and Hiroshi Uchida and Ken Nishida and Minoru Osada and Hiroshi Funakubo and Takashi Katoda and Seiichiro Koda",

year = "2005",

month = sep,

day = "22",

doi = "10.1143/JJAP.44.6905",

language = "English",

volume = "44",

pages = "6905--6909",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

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TY - JOUR

T1 - Enhancement of polarization property of PZT film by ion-substitution using rare-earth elements

AU - Nakakt, Hiroshi

AU - Uchida, Hiroshi

AU - Nishida, Ken

AU - Osada, Minoru

AU - Funakubo, Hiroshi

AU - Katoda, Takashi

AU - Koda, Seiichiro

PY - 2005/9/22

Y1 - 2005/9/22

N2 - Rare-earth-substituted lead zirconate titanate thin films were synthesized to improve the ferroelectric properties of lead zirconate titanate through the enhancement of its crystal anisotropy. Thin films of Pb1.00-(3x/2)o- REx(Zr0.40Ti0.60)O3 [RE-PZT(A)] and Pb1.00REx(Zr0.40Ti0.60) 1-(3x/4)O3 [RE-PZT(B)] with RE = La or Dy were deposited on (111)Pt/Ti/SiO2/(100)Si substrates by chemical solution deposition (CSD). Rare-earth-substitution did not affect the crystal orientation of the PZT-based films where the PZT(111) plane was oriented along the surface-normal direction. Dy3+ substitution based on DyPZT(B) up to x = 0.02 enhanced the crystal anisotropy (c/a) and remanent polarization (Pr) of PZT films simultaneously, while both c/a and Pr values of Dy-PZT(A) decreased as x increased continuously. On the other hand, La 3+ substitution degraded the ferroelectric properties gradually in both the case of La-PZT(A) and (B). The Dy3+ ion could be substituted for a B-site in a PZT crystal preferentially, and that promoted the crystal anisotropy and the ferroelectric properties of PZT films.

AB - Rare-earth-substituted lead zirconate titanate thin films were synthesized to improve the ferroelectric properties of lead zirconate titanate through the enhancement of its crystal anisotropy. Thin films of Pb1.00-(3x/2)o- REx(Zr0.40Ti0.60)O3 [RE-PZT(A)] and Pb1.00REx(Zr0.40Ti0.60) 1-(3x/4)O3 [RE-PZT(B)] with RE = La or Dy were deposited on (111)Pt/Ti/SiO2/(100)Si substrates by chemical solution deposition (CSD). Rare-earth-substitution did not affect the crystal orientation of the PZT-based films where the PZT(111) plane was oriented along the surface-normal direction. Dy3+ substitution based on DyPZT(B) up to x = 0.02 enhanced the crystal anisotropy (c/a) and remanent polarization (Pr) of PZT films simultaneously, while both c/a and Pr values of Dy-PZT(A) decreased as x increased continuously. On the other hand, La 3+ substitution degraded the ferroelectric properties gradually in both the case of La-PZT(A) and (B). The Dy3+ ion could be substituted for a B-site in a PZT crystal preferentially, and that promoted the crystal anisotropy and the ferroelectric properties of PZT films.

KW - Chemical solution deposition

KW - Dysprosium

KW - Ferroelectrics

KW - Ion substitution

KW - Lanthanum

KW - Lead zirconate titanate

KW - P-E hysteresis loop

KW - Raman spectrum

KW - Rare earths

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U2 - 10.1143/JJAP.44.6905

DO - 10.1143/JJAP.44.6905

M3 - Article

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SN - 0021-4922

VL - 44

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EP - 6909

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

IS - 9 B

ER -

Enhancement of polarization property of PZT film by ion-substitution using rare-earth elements

Abstract

Keywords

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