Synthesis, structural and magnetic properties of nanostructured Ca0.9Gd0.1MnO3 obtained by modified glycine nitrate procedure (MGNP)
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Rosić, MilenaLogar, Mihovil
Devečerski, Aleksandar
Prekajski, Marija D.
Radosavljević-Mihajlović, Ana S.
Kusigerski, Vladan
Spasojević, Vojislav
Matović, Branko
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Ca0.9Gd0.1MnO3 nanopowders with perovskite type crystal structure were synthesized by modified glycine nitrate procedure. Nanopowders were prepared by combining glycine with metal nitrates and/or metal acetates in their appropriate stoichiometric ratios. Modification of the procedure was performed by partial replacement of nitrates by acetates, in order to control the burn-up reaction. Obtained Ca0.9Gd0.1MnO3 powders were calcinated in the temperature interval from 850 degrees C to 950 degrees C for 10 min. Properties such as phase evolution, lattice parameters, chemical composition and magnetic properties were monitored by DTA, X-ray diffraction, SEM/EDS and magnetic measurements. Magnetic measurements performed at the sample with the smallest crystallite size showed that a 10% of Gd3+ substituted Ca2+ ions changes antiferromagnetic properties of CaMnO3 by the introduction of ferromagnetic interaction due to a double exchange between Mn3+ and Mn4+ ions. Presence of competing interacti...ons and their randomness lead to a formation of a spin glass state below Neel temperature T-N = 110 K. From the high temperature magnetic susceptibility measurements effective magnetic moment of manganese ions is determined which lies between the values for Mn3+ and Mn4+ ions. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Keywords:
Nanostructured materials / Spin glasses / Thermal analysis / Magnetic measurementsSource:
Ceramics International, 2011, 37, 4, 1313-1319Funding / projects:
- Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
DOI: 10.1016/j.ceramint.2010.12.015
ISSN: 0272-8842; 1873-3956
WoS: 000289383800024
Scopus: 2-s2.0-79952916003
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VinčaTY - JOUR AU - Rosić, Milena AU - Logar, Mihovil AU - Devečerski, Aleksandar AU - Prekajski, Marija D. AU - Radosavljević-Mihajlović, Ana S. AU - Kusigerski, Vladan AU - Spasojević, Vojislav AU - Matović, Branko PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4271 AB - Ca0.9Gd0.1MnO3 nanopowders with perovskite type crystal structure were synthesized by modified glycine nitrate procedure. Nanopowders were prepared by combining glycine with metal nitrates and/or metal acetates in their appropriate stoichiometric ratios. Modification of the procedure was performed by partial replacement of nitrates by acetates, in order to control the burn-up reaction. Obtained Ca0.9Gd0.1MnO3 powders were calcinated in the temperature interval from 850 degrees C to 950 degrees C for 10 min. Properties such as phase evolution, lattice parameters, chemical composition and magnetic properties were monitored by DTA, X-ray diffraction, SEM/EDS and magnetic measurements. Magnetic measurements performed at the sample with the smallest crystallite size showed that a 10% of Gd3+ substituted Ca2+ ions changes antiferromagnetic properties of CaMnO3 by the introduction of ferromagnetic interaction due to a double exchange between Mn3+ and Mn4+ ions. Presence of competing interactions and their randomness lead to a formation of a spin glass state below Neel temperature T-N = 110 K. From the high temperature magnetic susceptibility measurements effective magnetic moment of manganese ions is determined which lies between the values for Mn3+ and Mn4+ ions. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved. T2 - Ceramics International T1 - Synthesis, structural and magnetic properties of nanostructured Ca0.9Gd0.1MnO3 obtained by modified glycine nitrate procedure (MGNP) VL - 37 IS - 4 SP - 1313 EP - 1319 DO - 10.1016/j.ceramint.2010.12.015 ER -
@article{ author = "Rosić, Milena and Logar, Mihovil and Devečerski, Aleksandar and Prekajski, Marija D. and Radosavljević-Mihajlović, Ana S. and Kusigerski, Vladan and Spasojević, Vojislav and Matović, Branko", year = "2011", abstract = "Ca0.9Gd0.1MnO3 nanopowders with perovskite type crystal structure were synthesized by modified glycine nitrate procedure. Nanopowders were prepared by combining glycine with metal nitrates and/or metal acetates in their appropriate stoichiometric ratios. Modification of the procedure was performed by partial replacement of nitrates by acetates, in order to control the burn-up reaction. Obtained Ca0.9Gd0.1MnO3 powders were calcinated in the temperature interval from 850 degrees C to 950 degrees C for 10 min. Properties such as phase evolution, lattice parameters, chemical composition and magnetic properties were monitored by DTA, X-ray diffraction, SEM/EDS and magnetic measurements. Magnetic measurements performed at the sample with the smallest crystallite size showed that a 10% of Gd3+ substituted Ca2+ ions changes antiferromagnetic properties of CaMnO3 by the introduction of ferromagnetic interaction due to a double exchange between Mn3+ and Mn4+ ions. Presence of competing interactions and their randomness lead to a formation of a spin glass state below Neel temperature T-N = 110 K. From the high temperature magnetic susceptibility measurements effective magnetic moment of manganese ions is determined which lies between the values for Mn3+ and Mn4+ ions. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", journal = "Ceramics International", title = "Synthesis, structural and magnetic properties of nanostructured Ca0.9Gd0.1MnO3 obtained by modified glycine nitrate procedure (MGNP)", volume = "37", number = "4", pages = "1313-1319", doi = "10.1016/j.ceramint.2010.12.015" }
Rosić, M., Logar, M., Devečerski, A., Prekajski, M. D., Radosavljević-Mihajlović, A. S., Kusigerski, V., Spasojević, V.,& Matović, B.. (2011). Synthesis, structural and magnetic properties of nanostructured Ca0.9Gd0.1MnO3 obtained by modified glycine nitrate procedure (MGNP). in Ceramics International, 37(4), 1313-1319. https://doi.org/10.1016/j.ceramint.2010.12.015
Rosić M, Logar M, Devečerski A, Prekajski MD, Radosavljević-Mihajlović AS, Kusigerski V, Spasojević V, Matović B. Synthesis, structural and magnetic properties of nanostructured Ca0.9Gd0.1MnO3 obtained by modified glycine nitrate procedure (MGNP). in Ceramics International. 2011;37(4):1313-1319. doi:10.1016/j.ceramint.2010.12.015 .
Rosić, Milena, Logar, Mihovil, Devečerski, Aleksandar, Prekajski, Marija D., Radosavljević-Mihajlović, Ana S., Kusigerski, Vladan, Spasojević, Vojislav, Matović, Branko, "Synthesis, structural and magnetic properties of nanostructured Ca0.9Gd0.1MnO3 obtained by modified glycine nitrate procedure (MGNP)" in Ceramics International, 37, no. 4 (2011):1313-1319, https://doi.org/10.1016/j.ceramint.2010.12.015 . .