Oxygen-dependent transport properties in La0.7Ba0.3MnO3-δ thin films for uncooled infrared bolometric materials

Ken Ichi Hayashi, Eiji Ohta, Hideo Wada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

La0.7Ba0.3MnO3-δ (LBMO) has been noticed as a potential candidate for an uncooled infrared bolometer material, which has a large temperature dependent electrical resistance, as a potential candidate for an uncooled infrared bolometer material. The LBMO thin films were deposited on SrTiO3 (100) substrates by a laser ablation method. The films were characterized by an x-ray diffractometer. In the observation by an atomic force microscope, the size of the crystal grains and the number of grain boundaries on the films were extremely sensitive on the ambient oxygen pressure during the deposition. The grain size found to have an effect on both the magnitude of the resistivity and the temperature dependence of resistivity. The films deposited under the oxygen pressures of 53.3∼80.0Pa, having the temperature dependence of resistivity like a bulk, and it showed a large temperature coefficient of resistance (TCR: defined as 1/R dR/dT) over 3%/K near room temperature.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsR.E. Longshore
Pages160-167
Number of pages8
Volume4454
DOIs
Publication statusPublished - 2001
EventMaterials for Infrared Detectors - San Diego, CA, United States
Duration: 2001 Jul 302001 Aug 1

Other

OtherMaterials for Infrared Detectors
CountryUnited States
CitySan Diego, CA
Period01/7/3001/8/1

Fingerprint

Transport properties
transport properties
bolometers
Infrared radiation
Thin films
electrical resistivity
Oxygen
oxygen
thin films
Bolometers
temperature dependence
electrical resistance
diffractometers
Temperature
laser ablation
grain boundaries
grain size
microscopes
Acoustic impedance
Diffractometers

Keywords

  • Atomic force microscope
  • Laser ablation
  • Temperature coefficient of resistance
  • Uncooled infrared bolometer
  • X-ray diffraction

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Hayashi, K. I., Ohta, E., & Wada, H. (2001). Oxygen-dependent transport properties in La0.7Ba0.3MnO3-δ thin films for uncooled infrared bolometric materials. In R. E. Longshore (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4454, pp. 160-167) https://doi.org/10.1117/12.448171

Oxygen-dependent transport properties in La0.7Ba0.3MnO3-δ thin films for uncooled infrared bolometric materials. / Hayashi, Ken Ichi; Ohta, Eiji; Wada, Hideo.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / R.E. Longshore. Vol. 4454 2001. p. 160-167.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hayashi, KI, Ohta, E & Wada, H 2001, Oxygen-dependent transport properties in La0.7Ba0.3MnO3-δ thin films for uncooled infrared bolometric materials. in RE Longshore (ed.), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4454, pp. 160-167, Materials for Infrared Detectors, San Diego, CA, United States, 01/7/30. https://doi.org/10.1117/12.448171
Hayashi KI, Ohta E, Wada H. Oxygen-dependent transport properties in La0.7Ba0.3MnO3-δ thin films for uncooled infrared bolometric materials. In Longshore RE, editor, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4454. 2001. p. 160-167 https://doi.org/10.1117/12.448171
Hayashi, Ken Ichi ; Ohta, Eiji ; Wada, Hideo. / Oxygen-dependent transport properties in La0.7Ba0.3MnO3-δ thin films for uncooled infrared bolometric materials. Proceedings of SPIE - The International Society for Optical Engineering. editor / R.E. Longshore. Vol. 4454 2001. pp. 160-167
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