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Title: Nanoparticles of spinel and perovskite ferromagnets and prospects for their application in medicine

Abstract

In this work, nanoparticles of La{sub 0.75}Sr{sub 0.25}MnO{sub 3} compounds with perovskite structure and AFe{sub 2}O{sub 4} (A = Mn, Fe, Co, Ni, Zn) with spinel structure have been synthesized by precipitation from diethylene glycol and microemulsion using Triton X-100 surfactant. Comparative X-ray diffraction and magnetic studies of the synthesized nanoparticles have been carried out. Magnetic fluids prepared from synthesized nanopowders have been characterized by calorimetric measurements of specific loss power (SLP)

Authors:
; ;  [1];  [2];  [3]; ;  [4]
  1. Institute of General and Inorganic Chemistry, prospekt Palladina 32-34, 03142 Kyiv (Ukraine)
  2. Institute of Magnetism, bulvar Vernadskoho 36-b, 03142 Kyiv (Ukraine)
  3. National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
  4. R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, vul. Vasylkivska 45, 03022 Kyiv (Ukraine)
Publication Date:
OSTI Identifier:
22390531
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1627; Journal Issue: 1; Conference: 14. Electroceramics Conference, Bucharest (Romania), 16-20 Jun 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALORIMETRY; COBALT COMPOUNDS; FERRITES; FERROMAGNETIC MATERIALS; GLYCOLS; LANTHANUM COMPOUNDS; MANGANATES; MANGANESE COMPOUNDS; MICROEMULSIONS; NANOPARTICLES; NANOSTRUCTURES; PEROVSKITE; POWDERS; PRECIPITATION; SPINELS; STRONTIUM COMPOUNDS; X-RAY DIFFRACTION; ZINC COMPOUNDS

Citation Formats

Belous, A. G., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net, Solopan, S. O., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net, Yelenich, O. V., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net, Tovstolytkin, A. I., E-mail: atov@imag.kiev.ua, Kolodiazhnyi, T. V., E-mail: kolodiazhnyi.taras@nims.go.jp, Osinsky, S. P., E-mail: osion@onconet.kiev.ua, E-mail: bybnovskayal@ukr.net, and Bubnovskaya, L. N., E-mail: osion@onconet.kiev.ua, E-mail: bybnovskayal@ukr.net. Nanoparticles of spinel and perovskite ferromagnets and prospects for their application in medicine. United States: N. p., 2014. Web. doi:10.1063/1.4901650.
Belous, A. G., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net, Solopan, S. O., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net, Yelenich, O. V., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net, Tovstolytkin, A. I., E-mail: atov@imag.kiev.ua, Kolodiazhnyi, T. V., E-mail: kolodiazhnyi.taras@nims.go.jp, Osinsky, S. P., E-mail: osion@onconet.kiev.ua, E-mail: bybnovskayal@ukr.net, & Bubnovskaya, L. N., E-mail: osion@onconet.kiev.ua, E-mail: bybnovskayal@ukr.net. Nanoparticles of spinel and perovskite ferromagnets and prospects for their application in medicine. United States. doi:10.1063/1.4901650.
Belous, A. G., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net, Solopan, S. O., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net, Yelenich, O. V., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net, Tovstolytkin, A. I., E-mail: atov@imag.kiev.ua, Kolodiazhnyi, T. V., E-mail: kolodiazhnyi.taras@nims.go.jp, Osinsky, S. P., E-mail: osion@onconet.kiev.ua, E-mail: bybnovskayal@ukr.net, and Bubnovskaya, L. N., E-mail: osion@onconet.kiev.ua, E-mail: bybnovskayal@ukr.net. Wed . "Nanoparticles of spinel and perovskite ferromagnets and prospects for their application in medicine". United States. doi:10.1063/1.4901650.
@article{osti_22390531,
title = {Nanoparticles of spinel and perovskite ferromagnets and prospects for their application in medicine},
author = {Belous, A. G., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net and Solopan, S. O., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net and Yelenich, O. V., E-mail: belous@ionc.kar.net, E-mail: solopan@ukr.net, E-mail: yelenicho@ukr.net and Tovstolytkin, A. I., E-mail: atov@imag.kiev.ua and Kolodiazhnyi, T. V., E-mail: kolodiazhnyi.taras@nims.go.jp and Osinsky, S. P., E-mail: osion@onconet.kiev.ua, E-mail: bybnovskayal@ukr.net and Bubnovskaya, L. N., E-mail: osion@onconet.kiev.ua, E-mail: bybnovskayal@ukr.net},
abstractNote = {In this work, nanoparticles of La{sub 0.75}Sr{sub 0.25}MnO{sub 3} compounds with perovskite structure and AFe{sub 2}O{sub 4} (A = Mn, Fe, Co, Ni, Zn) with spinel structure have been synthesized by precipitation from diethylene glycol and microemulsion using Triton X-100 surfactant. Comparative X-ray diffraction and magnetic studies of the synthesized nanoparticles have been carried out. Magnetic fluids prepared from synthesized nanopowders have been characterized by calorimetric measurements of specific loss power (SLP)},
doi = {10.1063/1.4901650},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1627,
place = {United States},
year = {Wed Nov 05 00:00:00 EST 2014},
month = {Wed Nov 05 00:00:00 EST 2014}
}
  • Polycrystalline samples of La{sub 0.8}Ca{sub 0.2}Fe{sub 0.8}Ni{sub 0.2}O{sub 3-{delta}} (LCFN) with perovskite type structure have been prepared by combustion, freeze drying, citrate-gel process and liquid mix method. The analysis of X-ray powder diffraction indicated that the samples were single phase and crystallized in an orthorhombic (space group, Pnma no. 62) structure. Transmission electron microscopy (TEM) analysis on the synthesized powder at 600 {sup o}C by liquid mix method showed clusters of 150 nm formed by nanoparticles of 20 nm. Electrochemical performance of LCFN cathodes, which are used for intermediate temperature solid oxide fuel cells, were investigated. The polarization resistance wasmore » studied using two different electrolytes: Y-doped zirconia (YSZ) and Sm-doped ceria (SDC). The dc four-probe measurement exhibits a total electrical conductivity, over 100 S cm{sup -1} at T {>=} 600 {sup o}C, pointing out that strontium can be substituted for the cheaper calcium cation without destroying the electrochemical properties. Experimental results indicate that nanoparticles have more advantages in terms of smaller particle size and better electrochemical performance.« less
  • The perovskite series La{sub n{minus}nx}Ca{sub 1+nx}Mn{sub n}O{sub 3n+1} (n=2,3, and {infinity}) composed of n layers of MnO{sub 2} is a colossal magnetoresistance (CMR) ferromagnet. Results on the transport properties of epitaxial a-axis thin-film samples with a fixed carrier concentration (x=0.3) have indicated that a reduction in the number of layers results in systematic changes in the various features. These include an increase in resistivity, a decrease in the resistivity peak temperature T{sub c}{sup {rho}} corresponding to the metal-insulator transition, an enhancement of the maximum MR near T{sub c}{sup {rho}}, and an increase in the low-temperature intrinsic MR. In order tomore » explain the variation in these features with the number of MnO{sub 2} layers, it is necessary to take both c-axis transfer interaction and two-dimensional spin fluctuation into account. {copyright} {ital 1998} {ital The American Physical Society}« less
  • A novel sol-gel process of preparation of oxide electrocatalysts is investigated to prepare Ni-containing mixed oxides LaNiO{sub 3} and NiCo{sub 2}O{sub 4} at moderate temperatures. High surface area (20-55 m{sup 2} g{sup {minus}1}) powders and high roughness electrodes (30-1500) were obtained. Apparent and real electrocatalytical activity are compared and discussed.
  • Thermal expansion measurements to 1200/sup 0/C have been made by the Bureau of Mines of a wide selection of complex oxides of both the perovskite and spinel structures. These are compared with the thermal expansion of molybdenum and the molybdenum alloy TZM to find suitable expansion matches for oxide coating development. A dilatometric technique was employed which makes use of a measuring microscope, accurate to 5 x 10/sup -5/ in. In general, the spinels display a closer expansion match with the metal than the perovskites. Magnesium orthochromite showed the closest match between 25 and 1000/sup 0/C. Its expansion in thismore » range is 13 percent greater than that of molybdenum and TZM. Of the 50 oxide compositions examined, only 12 had expansion coefficients within 20 percent of that of molybdenum. All of these were orthochromites except the perovskite, 3BaHfO/sub 3/ . BaZrO/sub 3/.« less