Structural and magnetic properties of (Ba1-xLax)Fe12O19 obtained by mechanical alloying and ultrasonic irradiation

K. P. Putra, Azwar Manaf

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

2 Citations (Scopus)

Abstract

The effect of partial substitution of lanthanum to barium in hexagonal ferrite on the structure and magnetic properties of mechanically alloyed (Ba1-xLax)Fe12O19 (x=0 and 0.3) is described. Precursors of La2O3, BaCO3 and Fe2O3 were ball milled and sintered to obtain nanocrystalline particles of un-doped Ba0.6(Fe2O3) and doped (Ba0.7La0.3)Fe12O19. Phase studies in both materials indicated that (Ba0.7La0.3)Fe12O19 showed a presence of secondary Fe2O3 phase in addition to the main phase. It indicated that La substitution in M-type barium hexaferrite has a solubility limit. It is also shown that crystallite sizes of doped sample have a broaden size distribution ranging from a few nanometers to 200 nm with the mean size 37 nm, which different with un-doped sample where the distribution width and mean crystallite size were respectively slimmer and smaller. Magnetic properties of doped material showed a decrease in energy product (4.2 kJ.m-3) despite an increase in coercivity (234 kA. m-1 and 198.4 kA. m-1 respectively).

Original languageEnglish
Title of host publicationInternational Symposium on Current Progress in Mathematics and Sciences 2016, ISCPMS 2016
Subtitle of host publicationProceedings of the 2nd International Symposium on Current Progress in Mathematics and Sciences 2016
EditorsKiki Ariyanti Sugeng, Djoko Triyono, Terry Mart
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735415362
DOIs
Publication statusPublished - 10 Jul 2017
Event2nd International Symposium on Current Progress in Mathematics and Sciences 2016, ISCPMS 2016 - Depok, Jawa Barat, Indonesia
Duration: 1 Nov 20162 Nov 2016

Publication series

NameAIP Conference Proceedings
Volume1862
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2nd International Symposium on Current Progress in Mathematics and Sciences 2016, ISCPMS 2016
CountryIndonesia
CityDepok, Jawa Barat
Period1/11/162/11/16

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