Synthesis and characterization microwave absorber properties of La0.7(Ca1-xSrx)0.3MnO3 prepared by Sol-Gel method

In this research, structural engineering of lanthanum-manganate-based material was studied, starting with material synthesizing La0.7(Ca1-xSrx)0.3MnO3 with variation of x=0; 0.1; 0.2; and 0.3 using the sol-gel method as a microwave material. The effects of Sr substitution on the stucture, size of gr...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1816; no. 1
Main Authors Admi, R I, Saptari, S A, Tjahjono, A, Rahman, I N, Adi, W A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.02.2021
Subjects
Grain size
Lanthanum
Manganates
Microwave absorbers
Microwave absorption
Network analysers
Physics
Sol-gel processes
Structural engineering
Substitutes
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Summary:In this research, structural engineering of lanthanum-manganate-based material was studied, starting with material synthesizing La0.7(Ca1-xSrx)0.3MnO3 with variation of x=0; 0.1; 0.2; and 0.3 using the sol-gel method as a microwave material. The effects of Sr substitution on the stucture, size of grain, and microwave-absorbing properties were investigated in detail by various analytical methods. Using XRD (X-Ray Diffraction) showed that the sample had single phase and orthorombic structure (space group of Pnma), substitution of Sr2 + ions did not cause changes in structure. Characterized using SEM (Scanning Electron Microscope) showed change in grain size which increase when given Sr substitution. Characterized using VNA (Vector Network Analyzer) in the 8-12 GHz range shows that the sample La0.7(Ca1-xSrx)0.3MnO3 with x=0 has been able to absorb up to 55.64% microwaves at 10.44GHz. The study concluded the material of La0.7(Ca1-xSrx)0.3MnO3 have a good potential to be a candidate of microwave absorbing materials.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1816/1/012091