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Systematic microstructural development with thermal diffusivity behaviour from nanometric to micronic grains of strontium titanate

  • Idza Riati Ibrahim
  • Mansor Hashim
  • Ismayadi Ismail
  • Khamirul Amin Matori
  • Raba’ah Syahidah Azis
  • Rodziah Nazlan
  • Nor Hapishah Abdullah
  • Wan Norailiana Wan Ab Rahman
  • Fadzidah Mohd Idris
  • Norni Hidayawati Mat Daud
Article
  • 16 Downloads

Abstract

Strontium titanate is a promising candidate for applications in thermoelectric, thermal management applications, and modern electronic devices because of its desirable thermal stability, chemical stability, and semiconducting behaviour. However, the absence of its important systematic development, having grain size from several nanometric up to micronic size with evolving thermal diffusivity behaviour, triggers the need for filling up the vacuum. Two different heat treatments have been carried out onto the samples which were with presintering and without presintering. Nanometer-sized compacted powder samples were sintered from 500 to 1400 °C using 100 °C increments. The parallel characterizations of structural, microstructural and thermal diffusivity properties were systematically carried out. Interestingly, three significant value-differentiated groups: weak, moderate, and strong thermal diffusivity were observed, resulting from the influence of different phonon-scattering mechanisms through a systematic development of microstructural properties for both heat treatments.

Keywords

Thermal diffusivity Thermal conductivity Microstructure Strontium titanate 

Notes

Acknowledgements

The authors are grateful to Ministry Education Malaysia for MyPhD scholarship and supports from the Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology and Department of Physics, Faculty of Science, Universiti Putra Malaysia are also acknowledged.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • Idza Riati Ibrahim
    • 1
  • Mansor Hashim
    • 1
  • Ismayadi Ismail
    • 1
  • Khamirul Amin Matori
    • 1
    • 2
  • Raba’ah Syahidah Azis
    • 1
    • 2
  • Rodziah Nazlan
    • 3
  • Nor Hapishah Abdullah
    • 1
  • Wan Norailiana Wan Ab Rahman
    • 1
  • Fadzidah Mohd Idris
    • 4
  • Norni Hidayawati Mat Daud
    • 5
  1. 1.Materials Synthesis and Characterization Laboratory, Institute of Advanced TechnologyUniversiti Putra Malaysia (UPM)SerdangMalaysia
  2. 2.Department of Physics, Faculty of ScienceUniversiti Putra Malaysia (UPM)SerdangMalaysia
  3. 3.Department of Materials Technology, Faculty of Industrial Science and TechnologyUniversiti Malaysia Pahang, Kampus GambangKuantanMalaysia
  4. 4.PERMATA Insan CollegeUniversiti Sains Islam MalaysiaNilaiMalaysia
  5. 5.Centre of Pre-UniversityUniversiti Malaysia SarawakKota SamarahanMalaysia

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