Particle size effect on microwave absorbing of La0.67Ba0.33Mn0.94Ti0.06O3 powders prepared by mechanical alloying with the assistance of ultrasonic irradiation

Sitti Ahmiatri Saptari, Azwar Manaf, Budhy Kurniawan R.

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Doped manganites have attracted substantial interest due to their unique chemical and physics properties, which makes it possible to be used for microwave absorbing materials. In this paper we report synthesizes and characterization of La0.67Ba0.33Mn0.94Ti0.06O3 powders prepared by mechanical alloying with the assistance of a high power ultrasonic treatment. After solid state reaction, the presence of single phase was confirmed by X-ray Diffraction (XRD). Refinement results showed that samples are single phase with monoclinic structure. It was found that powder materials derived from mechanical alloying results in large variation in the particle size. A significant improvement was obtained upon subjecting the mechanically milled powder materials to an ultrasonication treatment for a relatively short period of time. As determined by particle size analyzer (PSA), the mean particle size gradually decreased from the original size of 5.02μm to 0.36μm. Magnetic properties were characterized by VSM, and hysteresis loops results showed that samples are soft magnetic. It was found that when the mean particle size decreases, saturation was increases and coersitivity was decreases. Microwave absorption properties were investigated in the frequency range of 8-12GHz using vector network analyzer. An optimal reflection loss of 24.44dB is reached at 11.4GHz.

Original languageEnglish
Title of host publication4th International Conference on Theoretical and Applied Physics, ICTAP 2014
EditorsNi Nyoman Rupiasih, Wayan Gede Suharta, Hery Suyanto
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413665
DOIs
Publication statusPublished - 11 Mar 2016
Event4th International Conference on Theoretical and Applied Physics, ICTAP 2014 - Bali, Indonesia
Duration: 16 Oct 201417 Oct 2014

Publication series

NameAIP Conference Proceedings
Volume1719
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference4th International Conference on Theoretical and Applied Physics, ICTAP 2014
CountryIndonesia
CityBali
Period16/10/1417/10/14

Keywords

  • LaBaMnTiO
  • microwave absorbing
  • particle size
  • ultrasonic

Fingerprint Dive into the research topics of 'Particle size effect on microwave absorbing of La<sub>0.67</sub>Ba<sub>0.33</sub>Mn<sub>0.94</sub>Ti<sub>0.06</sub>O<sub>3</sub> powders prepared by mechanical alloying with the assistance of ultrasonic irradiation'. Together they form a unique fingerprint.

Cite this