Influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite
Нема приказа
Аутори
Cvejic, Z.Antić, Bratislav
Kremenović, Aleksandar S.
Rakić, Srđan
Goya, Gerardo F.
Rechenberg, H. R.
Jovalekić, Čedomir
Spasojević, Vojislav
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
In this work we report results on the influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite. A series of Fe(2.85)RE(0.15)O(4) (RE = Gd, Dy, Ho, Tm and Yb) samples have been prepared by high energy ball milling. Structure/microstructure investigations of two selected samples Fe(2.85)Gd(0.15)O(4) and Fe(2.85)Tm(0.15)O(4), represent an extension of the previously published results on Fe(3)O(4)/gamma-Fe(2)O(3), Fe(2.85)Y(0.15)O(4) and Fe(2.55)In(0.45)O(4) [Z. Cvejic, S. Rakic, A. Kremenovic, B. Antic, C. Jovalekic. Ph. Colomban, Sol. State Sciences 8 (2006) 908], while magnetic characterization has been done for all the samples. Crystallite/particle size and strain determined by X-ray diffractometry and Transmission electron microscopy (TEM) confirmed the nanostructured nature of the mechanosynthesized materials. X-ray powder diffraction was used to analyze anisotropic line broadening effects through the Rietveld method. The size aniso...tropy was found to be small while strain anisotropy was large, indicating nonuniform distribution of deffects in the presence of Gd and Tm in the crystal structure. Superparamagnetic(SPM) behavior at room temperature was observed for all samples studied. The Y-substituted Fe(3)O(4) had the largest He and the lowest M(S). We discuss the changes in magnetic properties in relation to their magnetic anisotropy and microstructure. High field irreversibility (H GT 20kOe) in ZFC/FC magnetization versus temperature indicates the existence of high magnetocrystalline and/or strain induced anisotropy. (C) 2008 Elsevier B.V. All rights reserved.
Кључне речи:
Oxide materials / Mechanochemical processing / Microstructure / Magnetic measurements / X-ray diffractionИзвор:
Journal of Alloys and Compounds, 2009, 472, 1-2, 571-575Финансирање / пројекти:
- Serbian Ministry of Science and Environmental Protection
DOI: 10.1016/j.jallcom.2008.05.026
ISSN: 0925-8388
WoS: 000264757200107
Scopus: 2-s2.0-61349110746
Колекције
Институција/група
VinčaTY - JOUR AU - Cvejic, Z. AU - Antić, Bratislav AU - Kremenović, Aleksandar S. AU - Rakić, Srđan AU - Goya, Gerardo F. AU - Rechenberg, H. R. AU - Jovalekić, Čedomir AU - Spasojević, Vojislav PY - 2009 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3666 AB - In this work we report results on the influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite. A series of Fe(2.85)RE(0.15)O(4) (RE = Gd, Dy, Ho, Tm and Yb) samples have been prepared by high energy ball milling. Structure/microstructure investigations of two selected samples Fe(2.85)Gd(0.15)O(4) and Fe(2.85)Tm(0.15)O(4), represent an extension of the previously published results on Fe(3)O(4)/gamma-Fe(2)O(3), Fe(2.85)Y(0.15)O(4) and Fe(2.55)In(0.45)O(4) [Z. Cvejic, S. Rakic, A. Kremenovic, B. Antic, C. Jovalekic. Ph. Colomban, Sol. State Sciences 8 (2006) 908], while magnetic characterization has been done for all the samples. Crystallite/particle size and strain determined by X-ray diffractometry and Transmission electron microscopy (TEM) confirmed the nanostructured nature of the mechanosynthesized materials. X-ray powder diffraction was used to analyze anisotropic line broadening effects through the Rietveld method. The size anisotropy was found to be small while strain anisotropy was large, indicating nonuniform distribution of deffects in the presence of Gd and Tm in the crystal structure. Superparamagnetic(SPM) behavior at room temperature was observed for all samples studied. The Y-substituted Fe(3)O(4) had the largest He and the lowest M(S). We discuss the changes in magnetic properties in relation to their magnetic anisotropy and microstructure. High field irreversibility (H GT 20kOe) in ZFC/FC magnetization versus temperature indicates the existence of high magnetocrystalline and/or strain induced anisotropy. (C) 2008 Elsevier B.V. All rights reserved. T2 - Journal of Alloys and Compounds T1 - Influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite VL - 472 IS - 1-2 SP - 571 EP - 575 DO - 10.1016/j.jallcom.2008.05.026 ER -
@article{ author = "Cvejic, Z. and Antić, Bratislav and Kremenović, Aleksandar S. and Rakić, Srđan and Goya, Gerardo F. and Rechenberg, H. R. and Jovalekić, Čedomir and Spasojević, Vojislav", year = "2009", abstract = "In this work we report results on the influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite. A series of Fe(2.85)RE(0.15)O(4) (RE = Gd, Dy, Ho, Tm and Yb) samples have been prepared by high energy ball milling. Structure/microstructure investigations of two selected samples Fe(2.85)Gd(0.15)O(4) and Fe(2.85)Tm(0.15)O(4), represent an extension of the previously published results on Fe(3)O(4)/gamma-Fe(2)O(3), Fe(2.85)Y(0.15)O(4) and Fe(2.55)In(0.45)O(4) [Z. Cvejic, S. Rakic, A. Kremenovic, B. Antic, C. Jovalekic. Ph. Colomban, Sol. State Sciences 8 (2006) 908], while magnetic characterization has been done for all the samples. Crystallite/particle size and strain determined by X-ray diffractometry and Transmission electron microscopy (TEM) confirmed the nanostructured nature of the mechanosynthesized materials. X-ray powder diffraction was used to analyze anisotropic line broadening effects through the Rietveld method. The size anisotropy was found to be small while strain anisotropy was large, indicating nonuniform distribution of deffects in the presence of Gd and Tm in the crystal structure. Superparamagnetic(SPM) behavior at room temperature was observed for all samples studied. The Y-substituted Fe(3)O(4) had the largest He and the lowest M(S). We discuss the changes in magnetic properties in relation to their magnetic anisotropy and microstructure. High field irreversibility (H GT 20kOe) in ZFC/FC magnetization versus temperature indicates the existence of high magnetocrystalline and/or strain induced anisotropy. (C) 2008 Elsevier B.V. All rights reserved.", journal = "Journal of Alloys and Compounds", title = "Influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite", volume = "472", number = "1-2", pages = "571-575", doi = "10.1016/j.jallcom.2008.05.026" }
Cvejic, Z., Antić, B., Kremenović, A. S., Rakić, S., Goya, G. F., Rechenberg, H. R., Jovalekić, Č.,& Spasojević, V.. (2009). Influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite. in Journal of Alloys and Compounds, 472(1-2), 571-575. https://doi.org/10.1016/j.jallcom.2008.05.026
Cvejic Z, Antić B, Kremenović AS, Rakić S, Goya GF, Rechenberg HR, Jovalekić Č, Spasojević V. Influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite. in Journal of Alloys and Compounds. 2009;472(1-2):571-575. doi:10.1016/j.jallcom.2008.05.026 .
Cvejic, Z., Antić, Bratislav, Kremenović, Aleksandar S., Rakić, Srđan, Goya, Gerardo F., Rechenberg, H. R., Jovalekić, Čedomir, Spasojević, Vojislav, "Influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite" in Journal of Alloys and Compounds, 472, no. 1-2 (2009):571-575, https://doi.org/10.1016/j.jallcom.2008.05.026 . .