NDLI: Thermal behaviour of the system Fe(NO$_{3}$)$_{3}$ · 9H$_{2}$O–Bi$_{5}$O(OH)$_{9}$(NO$_{3}$)$_{4}$ · 9H$_{2}$O–glycine/urea and of their generated oxides (BiFeO$

Content Provider	Springer Nature Link
Author	Jurca, Bogdan Paraschiv, Carmen Ianculescu, Adelina Carp, Oana
Copyright Year	2009
Abstract	Bismuth ferrite (BiFeO$_{3}$) was obtained by a combustion reaction staring from two precursors systems, namely Fe(NO$_{3}$)$_{3}$ · 9H$_{2}$O–Bi$_{5}$O(OH)$_{9}$(NO$_{3}$)$_{4}$ · 9H$_{2}$O–glycine/urea with different metal nitrate/fuel molar ratios. The precursors’ thermal behavior is dependent on the fuel nature but practically independent to the fuel content. In glycine containing systems not all Bi$_{2}$O$_{3}$ is included into mixed oxides during the decomposition. Its presence was identified through the existence of two endothermic phase transitions (T$_{DTA max}$ at 745 and 818 °C) assigned to Bi$_{2}$O$_{3}$ α→δ transition, and its melting. The thermal investigations performed on oxides samples reveal for all oxides, independent on the precursor system, a similar behavior. For all the oxides was identified both the Curie temperature (which decreases with the annealing cycles) and the incongruent melting point (which is with ~10 °C higher for glycine generated oxides comparative with urea ones). The structural analysis shows in the case of the oxides prepared using urea as fuel, a faster evolution toward a single phase composition with the temperature, the formation of the BiFeO$_{3}$ perovskite phase being completed in the temperature range of 500–550 °C. Only some traces of Bi$_{36}$Fe$_{2}$O$_{57}$ were identified at the detection limit. TEM analysis performed on the BiFeO$_{3}$ thermally treated at 500 °C for 3 h revealed the presence of small particles with an average size of ~33 nm and polycrystalline agglomerates with an average size of ~100 nm for glycine/urea derived oxides.
Starting Page	91
Ending Page	98
Page Count	8
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	97
Issue Number	1
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-09-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Urea Glycine Combustion synthesis Bismuth iron oxide Measurement Science and Instrumentation Inorganic Chemistry Polymer Sciences Analytical Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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Synthesis of nanosized bismuth ferrite (BiFeO$_{3}$) by a combustion method starting from Fe(NO$_{3}$)$_{3}$·9H$_{2}$O-Bi(NO$_{3}$)$_{3}$·9H$_{2}$O-glycine or urea systems

A new method of synthesis of BiFeO$_{3}$ prepared by thermal decomposition of Bi[Fe(CN)$_{6}$]·4H$_{2}$O

The Thermal Decomposition of Fe(NO$_{3}$)$_{3·}$9H$_{2}$O

Thermal analysis of doped Bi$_{2}$O$_{3}$

Mass spectrometric investigation of vaporization in the Bi$_{2}$O$_{3}$-Fe$_{2}$O$_{3}$ system

Phase states in the Bi$_{4}$Ti$_{3}$O$_{12}$-BiFeO$_{3}$ section in the Bi$_{2}$O$_{3}$-TiO$_{2}$-Fe$_{2}$O$_{3}$ system

Thermal analysis of the Bi$_{2}$O$_{3}$-Y$_{2}$O$_{3}$-ZrO$_{2}$ pigments

Thermal analysis of the Bi$_{2}$O$_{3}$-Er$_{2}$O$_{3}$-Zro$_{2}$ pigments

Thermal synthesis of the (Bi$_{2}$O$_{3}$)$_{1–x}$(Er$_{2}$O$_{3}$)$_{x}$ pigments

Thermal behaviour of the system Fe(NO$_{3}$)$_{3}$ · 9H$_{2}$O–Bi$_{5}$O(OH)$_{9}$(NO$_{3}$)$_{4}$ · 9H$_{2}$O–glycine/urea and of their generated oxides (BiFeO$_{3}$)

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Synthesis of nanosized bismuth ferrite (BiFeO$_{3}$) by a combustion method starting from Fe(NO$_{3}$)$_{3}$·9H$_{2}$O-Bi(NO$_{3}$)$_{3}$·9H$_{2}$O-glycine or urea systems

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Thermal behaviour of the system Fe(NO$_{3}$)$_{3}$ · 9H$_{2}$O–Bi$_{5}$O(OH)$_{9}$(NO$_{3}$)$_{4}$ · 9H$_{2}$O–glycine/urea and of their generated oxides (BiFeO$_{3}$)