Growth processes of lithium titanate thin films deposited by using pulsed laser deposition

Akichika Kumatani, Takeo Ohsawa, Ryota Shimizu, Yoshitaka Takagi, Susumu Shiraki, Taro Hitosugi

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

We have investigated the pulsed laser deposition (PLD) growth processes of spinel lithium titanates based on the preparation of Li 4Ti 5O 12 and LiTi 2O 4 from a Li 4Ti 5O 12 target. The Li/Ti atomic ratio of the species arriving at substrate during the deposition was only ∼0.5. The LiTi 2O 4 epitaxial thin films fabricated on MgAl 2O 4 (111) substrate exhibited high conductivity at room temperature (∼3.0 × 10 3 Ω -1 cm -1) and a superconducting transition temperature of ∼12 K. These values are the highest reported for epitaxial thin films. Our results demonstrate the importance of the target composition, providing further insights into the Li-containing metal oxide deposition processes using PLD.

Original languageEnglish
Article number123103
JournalApplied Physics Letters
Volume101
Issue number12
DOIs
Publication statusPublished - 2012 Sep 17

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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