Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles
Нема приказа
Аутори
Tadić, MarinCitakovic, Nada
Panjan, Matjaž
Stojanović, Zoran S.
Marković, Dragana
Spasojević, Vojislav
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
We report on hydrothermal synthesis, plate-like morphology, microstructure and magnetic properties of hematite (alpha-Fe2O3) plate-like particles. The sample is obtained immediately after the hydrothermal process without using any template and without further heat treatment. The so-obtained sample is characterized by X-ray powder diffraction (XRPD), energy-dispersive X-ray spectroscopy (EDX), field-emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and superconducting quantum interference device ( SQUID) magnetometer. XRPD confirms the formation of a single-phase hematite sample whereas EDX reveals that iron and oxygen are the only components of the sample. SEM, FE-SEM, TEM and HRTEM show that the sample is composed of plate-like particles. The width of the particles is similar to 500nm whereas thickness is similar to 100 nm ( aspect ratio 5: 1). The HRTEM images exhibit well defined lattice fringes of alpha-Fe2O3 partic...les that confirm their high crystallinity. Moreover, the HRTEM analysis indicates the plate-like particles preferring crystal growth along [0 1 2] direction. Magnetic measurements display significant hysteretic behavior at room temperature with coercivity H-C = 1140 Oe, remanent magnetization M-r = 0.125 emu/g and saturation magnetization M-S = 2.15 emu/g as well as the Morin transition at TM similar to 250 K. The magnetic properties are discussed with respect to morphology and microstructure of the particles. The results and comparison with urchin-like, rods, spherical, hexagonal, star-like, dendrites, platelets, irregular, nanoplatelets, nanocolumns and nanospheres hematites reveal that the plate-like particles possess good magnetic properties. One may conjecture that the shape anisotropy plays an important role in the magnetic properties of the sample. (C) 2011 Elsevier B.V. All rights reserved.
Кључне речи:
Hematite (alpha-Fe2O3) / Hydrothermal synthesis / Nanostructures / Magnetic materials / Morin transitionИзвор:
Journal of Alloys and Compounds, 2011, 509, 28, 7639-7644Финансирање / пројекти:
- Магнетни и радионуклидима обележени наноструктурни материјали за примене у медицини (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45015)
DOI: 10.1016/j.jallcom.2011.04.117
ISSN: 0925-8388; 1873-4669
WoS: 000291460700017
Scopus: 2-s2.0-79958184004
Колекције
Институција/група
VinčaTY - JOUR AU - Tadić, Marin AU - Citakovic, Nada AU - Panjan, Matjaž AU - Stojanović, Zoran S. AU - Marković, Dragana AU - Spasojević, Vojislav PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4375 AB - We report on hydrothermal synthesis, plate-like morphology, microstructure and magnetic properties of hematite (alpha-Fe2O3) plate-like particles. The sample is obtained immediately after the hydrothermal process without using any template and without further heat treatment. The so-obtained sample is characterized by X-ray powder diffraction (XRPD), energy-dispersive X-ray spectroscopy (EDX), field-emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and superconducting quantum interference device ( SQUID) magnetometer. XRPD confirms the formation of a single-phase hematite sample whereas EDX reveals that iron and oxygen are the only components of the sample. SEM, FE-SEM, TEM and HRTEM show that the sample is composed of plate-like particles. The width of the particles is similar to 500nm whereas thickness is similar to 100 nm ( aspect ratio 5: 1). The HRTEM images exhibit well defined lattice fringes of alpha-Fe2O3 particles that confirm their high crystallinity. Moreover, the HRTEM analysis indicates the plate-like particles preferring crystal growth along [0 1 2] direction. Magnetic measurements display significant hysteretic behavior at room temperature with coercivity H-C = 1140 Oe, remanent magnetization M-r = 0.125 emu/g and saturation magnetization M-S = 2.15 emu/g as well as the Morin transition at TM similar to 250 K. The magnetic properties are discussed with respect to morphology and microstructure of the particles. The results and comparison with urchin-like, rods, spherical, hexagonal, star-like, dendrites, platelets, irregular, nanoplatelets, nanocolumns and nanospheres hematites reveal that the plate-like particles possess good magnetic properties. One may conjecture that the shape anisotropy plays an important role in the magnetic properties of the sample. (C) 2011 Elsevier B.V. All rights reserved. T2 - Journal of Alloys and Compounds T1 - Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles VL - 509 IS - 28 SP - 7639 EP - 7644 DO - 10.1016/j.jallcom.2011.04.117 ER -
@article{ author = "Tadić, Marin and Citakovic, Nada and Panjan, Matjaž and Stojanović, Zoran S. and Marković, Dragana and Spasojević, Vojislav", year = "2011", abstract = "We report on hydrothermal synthesis, plate-like morphology, microstructure and magnetic properties of hematite (alpha-Fe2O3) plate-like particles. The sample is obtained immediately after the hydrothermal process without using any template and without further heat treatment. The so-obtained sample is characterized by X-ray powder diffraction (XRPD), energy-dispersive X-ray spectroscopy (EDX), field-emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and superconducting quantum interference device ( SQUID) magnetometer. XRPD confirms the formation of a single-phase hematite sample whereas EDX reveals that iron and oxygen are the only components of the sample. SEM, FE-SEM, TEM and HRTEM show that the sample is composed of plate-like particles. The width of the particles is similar to 500nm whereas thickness is similar to 100 nm ( aspect ratio 5: 1). The HRTEM images exhibit well defined lattice fringes of alpha-Fe2O3 particles that confirm their high crystallinity. Moreover, the HRTEM analysis indicates the plate-like particles preferring crystal growth along [0 1 2] direction. Magnetic measurements display significant hysteretic behavior at room temperature with coercivity H-C = 1140 Oe, remanent magnetization M-r = 0.125 emu/g and saturation magnetization M-S = 2.15 emu/g as well as the Morin transition at TM similar to 250 K. The magnetic properties are discussed with respect to morphology and microstructure of the particles. The results and comparison with urchin-like, rods, spherical, hexagonal, star-like, dendrites, platelets, irregular, nanoplatelets, nanocolumns and nanospheres hematites reveal that the plate-like particles possess good magnetic properties. One may conjecture that the shape anisotropy plays an important role in the magnetic properties of the sample. (C) 2011 Elsevier B.V. All rights reserved.", journal = "Journal of Alloys and Compounds", title = "Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles", volume = "509", number = "28", pages = "7639-7644", doi = "10.1016/j.jallcom.2011.04.117" }
Tadić, M., Citakovic, N., Panjan, M., Stojanović, Z. S., Marković, D.,& Spasojević, V.. (2011). Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles. in Journal of Alloys and Compounds, 509(28), 7639-7644. https://doi.org/10.1016/j.jallcom.2011.04.117
Tadić M, Citakovic N, Panjan M, Stojanović ZS, Marković D, Spasojević V. Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles. in Journal of Alloys and Compounds. 2011;509(28):7639-7644. doi:10.1016/j.jallcom.2011.04.117 .
Tadić, Marin, Citakovic, Nada, Panjan, Matjaž, Stojanović, Zoran S., Marković, Dragana, Spasojević, Vojislav, "Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles" in Journal of Alloys and Compounds, 509, no. 28 (2011):7639-7644, https://doi.org/10.1016/j.jallcom.2011.04.117 . .