Fabrication and characterization of Pt-oxide electrode for ferroelectric random access memory application

Woo Sik Kim, Ji Wan Kim, Hyung-Ho Park, Ho Nyung Lee

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This paper recommends Pt-oxide for noble electrode of capacitor in advanced ferroelectric random access memory (FRAM). Pt-oxide was deposited by an rf magnetron sputtering system with varying O2 flow ratio [O2/(O2+Ar)] on sol-gel derived Pb(Zr,Ti)O3. The deposition rate of Pt-oxide was higher than that of Pt because of its larger molar volume. However, the deposition rate decreased with further increase in O2 flow ratio due to the oxidation of target surface. After the consideration of resistivity and chemical bonding state of Pt-oxides, 70% of O2 flow ratio was adopted as a deposition condition of Pt-oxide. Pt-oxide/PZT/Pt structure showed fatigue free behavior without degradation of I-V characteristic. These results indicate that Pt-oxide is a promising electrode material for ferroelectric capacitor.

Original languageEnglish
Pages (from-to)7097-7099
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume39
Issue number12 B
Publication statusPublished - 2000 Dec 1

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random access memory
Ferroelectric materials
Data storage equipment
Fabrication
Electrodes
fabrication
Oxides
electrodes
oxides
Deposition rates
capacitors
Capacitors
electrode materials
Density (specific gravity)
Magnetron sputtering
Sol-gels
magnetron sputtering
Fatigue of materials
gels
degradation

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "This paper recommends Pt-oxide for noble electrode of capacitor in advanced ferroelectric random access memory (FRAM). Pt-oxide was deposited by an rf magnetron sputtering system with varying O2 flow ratio [O2/(O2+Ar)] on sol-gel derived Pb(Zr,Ti)O3. The deposition rate of Pt-oxide was higher than that of Pt because of its larger molar volume. However, the deposition rate decreased with further increase in O2 flow ratio due to the oxidation of target surface. After the consideration of resistivity and chemical bonding state of Pt-oxides, 70{\%} of O2 flow ratio was adopted as a deposition condition of Pt-oxide. Pt-oxide/PZT/Pt structure showed fatigue free behavior without degradation of I-V characteristic. These results indicate that Pt-oxide is a promising electrode material for ferroelectric capacitor.",
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Fabrication and characterization of Pt-oxide electrode for ferroelectric random access memory application. / Kim, Woo Sik; Kim, Ji Wan; Park, Hyung-Ho; Lee, Ho Nyung.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 39, No. 12 B, 01.12.2000, p. 7097-7099.

Research output: Contribution to journalArticle

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