NDLI: Synthesis of nano-structured La$_{0.8}$Ba$_{0.2}$MnO$_{3}$ perovskite via a mechano-thermal route

Content Provider	Springer Nature Link
Author	Sadighi, Zoya Ataie, Abolghasem Barati, Mohammad Reza
Copyright Year	2014
Abstract	In this study, barium-doped lanthanum manganite, La$_{0.8}$Ba$_{0.2}$MnO$_{3}$, was synthesized via a mechano-thermal route employing high energy ball milling and subsequent heat treatment. The structural evolution, morphology and thermal behaviour of the powders were evaluated using XRD, FESEM, and DTA/TGA, respectively. DTA/TGA results showed that the calcination temperature of the carbonates significantly decreased by increasing the milling time. The results revealed that single phase perovskite was formed at 900 °C in a milled sample for 2 h and this temperature decreased to 600 °C by increasing the milling time to 30 h. The mean crystallite size also decreased from 32 to 20 nm by increasing the milling time from 2 to 30 h. The reaction sequence of La$_{0.8}$Ba$_{0.2}$MnO$_{3}$ formation via the mechano-thermal route is proposed using XRD and DTA/TGA results. FESEM micrographs showed that the mean particle size of the perovskite phase is increased slightly from 30 to 40 nm by increasing the heat treatment temperature from 600 to 900 °C.
Starting Page	77
Ending Page	81
Page Count	5
File Format	PDF
ISSN	15989623
Journal	Metals and Materials
Volume Number	20
Issue Number	1
e-ISSN	20054149
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-01-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	nanostructured materials mechanical milling microstructure X-ray diffraction thermal analysis Metallic Materials Operating Procedures, Materials Treatment Magnetism, Magnetic Materials Engineering Thermodynamics, Heat and Mass Transfer Characterization and Evaluation of Materials Continuum Mechanics and Mechanics of Materials
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Condensed Matter Physics

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