Document Details

Document Type : Article In Journal 
Document Title :
Formation of LaFeO3 and thermal decomposition reactions in lanthanum(III) oxalate-iron(II) oxalate crystalline mixture
Formation of LaFeO3 and thermal decomposition reactions in lanthanum(III) oxalate-iron(II) oxalate crystalline mixture
 
Subject : Chemistry 
Document Language : English 
Abstract : Thermal processes involved during the decomposition course of La 2(C2O4)3•10H 2O-FeC2O4•2H2O (1:2 mole ratio) mixture up to 750 °C, in an atmosphere of air, were monitored by thermogravimetry and differential thermal analysis. X-ray diffraction and Mössbauer spectroscopy were used to characterize the intermediates and the final product. The results showed that a microcrystalline or possibly amorphous iron(III) oxide with a paramagnetic nature was appeared in the early stages of decomposition at 250 °C. By increasing the temperature, a well crystalline hematite with ferromagnetic properties was obtained. XRD pattern of the mixture calcined at 1100 °C shows the formation of LaFeO3 single phase in consistent with the hyperfine magnetic splitting (one sextet of lines) characteristic of LaFeO3 obtained in the Mössbauer spectra of the mixture calcined at the same temperature. 
ISSN : 0022-2461 
Journal Name : Journal of Materials Science 
Volume : 41 
Issue Number : 22 
Publishing Year : 1427 AH
2006 AD 
Article Type : Article 
Added Date : Wednesday, December 28, 2011 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
M A GabalGabal, M AResearcherDoctoratemgabalabdo@yahoo.com
Samy S Ata-AllahAta-Allah, Samy SResearcherDoctorate 
عبدالرحمن عبيد اليوبيAl-Youbia, Abdulrahman ObaidResearcherDoctorateaalyoubi@kau.edu.sa
سليمان ناصر باسهلBasahel, Suliman NaserResearcherDoctoratesbasahel@kau.edu.sa
شعيل أحمد الثبيتيAL-Thabaitia, Shaeel AhmedResearcherDoctoratesthabiti@hotmail.com

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