Magnetic properties and reflection loss characteristic of Mn-Ti substituted barium-strontium hexaferrite

Viktor Vekky Ronald Repi, Azwar Manaf, Bambang Soegiono

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

3 Citations (Scopus)

Abstract

The magnetic and microwave absorbing properties of the Mn-Ti substituted barium strontium hexaferrite, Ba0.5Sr0.5Fe12-xMnx/2Tix/2O19 (x: 0; 0.2 and 0.4) prepared by a mechanical alloying technique were investigated. Material phases in synthesized samples were identified by XRD from which results confirmed that the sinthesized material was a single phase material. The hysteresis loop for the samples as analyzed by a permagraph showing those of typical of hexaferrite permanent magnet but with both remanence and coercivity decreased remarkably with the increasing fraction of Mn-Ti. The reflection coefficients S11, S21 of the ferrite samples were measured in the X-band frequency range (9-15 GHz) and their absorbing properties were calculated according to transmission line theory. It was observed that the absorption was taking place in the whole frequency range between 9 and 15 GHz. In addition, resonance frequencies have shifted due to the Mn-Ti substitution in barium-strontium hexaferrite. It is concluded that the Mn-Ti substituted barium-strontium hexaferrites would be a good potential candidate for electromagnetic absorbers and for other practical applications at high frequencies.

Original languageEnglish
Title of host publicationAdvanced Materials Science and Technology - ICAMST 2013
PublisherTrans Tech Publications
Pages418-422
Number of pages5
ISBN (Print)9783038350316
DOIs
Publication statusPublished - 2014
Event2013 International Conference on Advanced Materials Science and Technology, ICAMST 2013 - Yogyakarta, Indonesia
Duration: 17 Sep 201318 Sep 2013

Publication series

NameAdvanced Materials Research
Volume896
ISSN (Print)1022-6680

Conference

Conference2013 International Conference on Advanced Materials Science and Technology, ICAMST 2013
Country/TerritoryIndonesia
CityYogyakarta
Period17/09/1318/09/13

Keywords

  • Barium hexaferrite
  • Magnetic properties
  • Mechanical alloying
  • Microwave absorber properties
  • Refflection loss

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