Microstructures in complex perovskite (Li1/2Ln 1/2)TiO3 (Ln = Pr, Nd, Sm)

Hwack Joo Lee, Hyun Min Park, Sang Ho Oh, Yang Koo Cho, Jin Ok Son, Sahn Nahm

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Microstructural characterizations of (Li1/2Ln 1/2)TiO3 (Ln = Pr, Nd, Sm) systems were carried out using transmission electron microscopy. Cuboidal grains of ∼2.5 μm mean size with internal fine structures are dominant. Antiphase boundaries (APBs) and ferroelastic domains are found among the internal fine structure. The APBs originate from the superlattice reflections of (1/2)(001) observed in three systems and (1/2)(111) NaCl-type ordering of Pr3+ or Nd3+ and Li1+ or vacancy in LPT and LNT. However, in LST, (1/2)(111) ordering is absent. The ferroelastic domains are formed by the antiphase and in-phase tilting of oxygen octahedra and the antiparallel shifts of A-site cations. Also, more complex structural changes such as spinodal decomposition are involved in the phase transitions in these systems.

Original languageEnglish
Pages (from-to)7592-7595
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume43
Issue number11 A
DOIs
Publication statusPublished - 2004 Nov 1

Fingerprint

Spinodal decomposition
antiphase boundaries
Perovskite
Vacancies
Phase transitions
Positive ions
fine structure
Transmission electron microscopy
microstructure
Microstructure
Oxygen
Hubble Space Telescope
decomposition
cations
transmission electron microscopy
shift
oxygen

Keywords

  • (LiLn)TiO (Ln = Pr, Nd, Sm)
  • Antiphase boundaries
  • Ferroelastic domain boundaries
  • Microstructures
  • Structure modulations
  • Tilting of oxygen octahedron

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Microstructures in complex perovskite (Li1/2Ln 1/2)TiO3 (Ln = Pr, Nd, Sm). / Lee, Hwack Joo; Park, Hyun Min; Oh, Sang Ho; Cho, Yang Koo; Son, Jin Ok; Nahm, Sahn.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 43, No. 11 A, 01.11.2004, p. 7592-7595.

Research output: Contribution to journalArticle

Lee, Hwack Joo ; Park, Hyun Min ; Oh, Sang Ho ; Cho, Yang Koo ; Son, Jin Ok ; Nahm, Sahn. / Microstructures in complex perovskite (Li1/2Ln 1/2)TiO3 (Ln = Pr, Nd, Sm). In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2004 ; Vol. 43, No. 11 A. pp. 7592-7595.
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