Electrical properties of (Ca,Sr)Bi4Ti4O15 thin films fabricated using a chemical solution deposition method

Hiroshi Uchida, Keiko Sakurai, Isao Okada, Hirofumi Matsuda, Takashi Iijima, Takashi Kojima, Takayuki Watanabe, Hiroshi Funakubo

Research output: Contribution to journalArticle

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Abstract

Thin films of calcium-strontium bismuth titanate (Ca1-xSrx)Bi4Ti4O15 solid solution were fabricated on (111)Pt/Ti/SiO2/(100)Si substrates by a chemical-solution deposition (CSD) technique. These films had x = 0-1.00 and consisted of a polycrystalline structure with random orientation of the bismuth layer-structured ferroelectric (BLSF) crystal (m = 4). The relative dielectric constants of (Ca1-xSrx)Bi4Ti4O15 films were enhanced from 40 to 220 with increasing x; these values did not vary significantly with changes in the measuring frequency and the bias field. The temperature coefficient of the relative dielectric constant at around room temperature became larger with increasing x from 0 to 1.00; the change in the dielectric constant of these films between 30-100°C increased from 2% to 15%.

Original languageEnglish
Pages (from-to)5990-5993
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume42
Issue number9 B
Publication statusPublished - Sep 1 2003
Externally publishedYes

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Electric properties
Permittivity
electrical properties
permittivity
Bismuth
Thin films
bismuth
thin films
Strontium
strontium
Ferroelectric materials
calcium
Calcium
Solid solutions
solid solutions
Temperature
Crystals
room temperature
Substrates
coefficients

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Electrical properties of (Ca,Sr)Bi4Ti4O15 thin films fabricated using a chemical solution deposition method. / Uchida, Hiroshi; Sakurai, Keiko; Okada, Isao; Matsuda, Hirofumi; Iijima, Takashi; Kojima, Takashi; Watanabe, Takayuki; Funakubo, Hiroshi.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 42, No. 9 B, 01.09.2003, p. 5990-5993.

Research output: Contribution to journalArticle

Uchida, Hiroshi ; Sakurai, Keiko ; Okada, Isao ; Matsuda, Hirofumi ; Iijima, Takashi ; Kojima, Takashi ; Watanabe, Takayuki ; Funakubo, Hiroshi. / Electrical properties of (Ca,Sr)Bi4Ti4O15 thin films fabricated using a chemical solution deposition method. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2003 ; Vol. 42, No. 9 B. pp. 5990-5993.
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AU - Sakurai, Keiko

AU - Okada, Isao

AU - Matsuda, Hirofumi

AU - Iijima, Takashi

AU - Kojima, Takashi

AU - Watanabe, Takayuki

AU - Funakubo, Hiroshi

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