Study on the magnetic properties of nano size ni particles synthesized by pulsed wire evaporation (pwe) method

The microstructures and magnetic properties of CoPt thin films with thicknesses between 1 and 20 nm deposited on amorphous glass substrate and post-annealing at 600°C for 30 min were investigated. The morphology of CoPt thin film would change from a discontinuous nano-size CoPt islands into a continuous film gradually as the film thickness was increased from 1 to 20 nm. The formation mechanism of the CoPt islands may be due to the surface energy difference between the glass substrate and CoPt alloy. Each CoPt island could be a single domain particle. This discontinuous nano-island CoPt recording film may increase the recording density and enhance the signal to noise ratio while comparing with the continuous film. The as-deposited 5 nm CoPt film revealed the separated islands morphology after annealing at 600°C for 30 min. This nano-size CoPt thin film may be a candidate for ultra-high density magnetic recording media due to its discontinuous islanded nanostructure.

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Preparation and magnetic properties of nano size nickel ferrite particles using hydrothermal method

Chemistry Central Journal ◽

10.1186/1752-153x-6-23 ◽

2012 ◽

Vol 6 (1) ◽

Cited By ~ 138

Author(s):

Kamellia Nejati ◽

Rezvanh Zabihi

Keyword(s):

Magnetic Properties ◽

Hydrothermal Method ◽

Nickel Ferrite ◽

Nano Size

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Effect of Cation Proportion on the Structural and Magnetic Properties of Ni-Zn Ferrites Nano-Size Particles Prepared By Co-Precipitation Technique

Chinese Journal of Chemical Physics ◽

10.1088/1674-0068/21/04/381-386 ◽

2008 ◽

Vol 21 (4) ◽

pp. 381-386 ◽

Cited By ~ 48

Author(s):

S. Jadhav Santosh ◽

E. Shirsath Sagar ◽

B. G. Toksha ◽

S. J. Shukla ◽

K. M. Jadhav

Keyword(s):

Magnetic Properties ◽

Precipitation Technique ◽

Structural And Magnetic Properties ◽

Co Precipitation ◽

Nano Size

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Effects of sintering temperature on microstructure and magnetic properties of NiFe2O4 prepared from nano size powder of NiO and Fe2O3

Journal of Bangladesh Academy of Sciences ◽

10.3329/jbas.v34i2.6865 ◽

1970 ◽

Vol 34 (2) ◽

pp. 189-195 ◽

Cited By ~ 12

Author(s):

Mahabub Alam Bhuiyan ◽

Sheikh Manjura Hoque ◽

Shamima Choudhury

Keyword(s):

Magnetic Properties ◽

Sintering Temperature ◽

Great Influence ◽

Initial Permeability ◽

X Ray Diffraction ◽

Wet Chemical ◽

Diffraction Patterns ◽

Academy Of Sciences ◽

Nano Size ◽

Size Powder

Polycrystalline NiFe2O4 was prepared by solid state reaction from nano size powder of NiO and Fe2O3 which were synthesized by wet chemical method. The inverse spinel single phase of the sample has been confirmed by the X-ray diffraction patterns. SEM micrographs of the samples revealed that the grain size increases and the porosity decreases with the increase in sintering temperature and has great influence on the magnetic properties of NiFe2O4 . Enhancement of real part of initial permeability (μ′) as a function of frequency has been observed with the increase in sintering temperature. Temperature dependence real part of initial permeability has been observed at various sintering temperature and gives the manifestation of Hopkinson effect. Variation of Curie temperature (Tc) has been found with the variation of sintering temperature. Key words: Sintering temperature; Microstructure; Magnetic properties DOI: 10.3329/jbas.v34i2.6865Journal of Bangladesh Academy of Sciences, Vol. 34, No. 2, 189-195, 2010

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Elastomers Containing Fillers with Magnetic Properties

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.154.121 ◽

2009 ◽

Vol 154 ◽

pp. 121-126 ◽

Cited By ~ 4

Author(s):

Marian Zaborski ◽

Joanna Pietrasik ◽

Marcin Masłowski

Keyword(s):

Mechanical Properties ◽

Magnetic Properties ◽

Ionic Liquids ◽

Iron Oxides ◽

Itaconic Acid ◽

Calcium Stearate ◽

Ethylene Propylene ◽

Nano Size

Composites of rubbers such as ethylene – propylene and acrylonitrile – butadiene with micro size Fe¬3O4, Fe2O3, and nano size Fe3O4 as the fillers were tested. Iron oxides were found to be active fillers which improved mechanical properties of elastomers. Additionally, they also changed their magnetic properties. Furthermore, the surface of micro size Fe3O4 was modified to upgrade mechanical properties of the vulcanizates. Itaconic acid, methacryloxypropyltrimethoxysilane and monododecyl maleate were used as modifying agents. To improve dispersion of applied fillers in polymers matrix, non-ionic (NF-PEG), anionic (calcium stearate ), cationic (DTAB, DTAC, DDAB, CTAD) and ionic liquids (HMIMBF4, BMIMPF6, OMIMPF6) were used. It was observed that both non-modified and modified micro iron oxides and nano iron oxides improved the properties of the vulcanizates the most effectively.

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Design of Hollow Nanocapsules and their Applications in Biomedical Imaging

Global Drug Design & Development Review ◽

10.31703/gdddr.2020(v-i).02 ◽

2020 ◽

Vol V (I) ◽

pp. 15-24

Author(s):

Aimen Qaiser ◽

Muhammad Rauf ul Hassan ◽

Maria Hassan Kiani ◽

Husna Khalid ◽

Gul Shahnaz

Keyword(s):

Magnetic Properties ◽

Surface Area ◽

Biomedical Applications ◽

Biomedical Imaging ◽

Imaging Modalities ◽

Electrical And Magnetic Properties ◽

Imaging Probes ◽

Composition I ◽

Nano Size ◽

Carrier Systems

Different nanocarrier systems owing to their nano size, increased surface area and unique electrical and magnetic properties are employed for biomedical applications. Among the various nanocarrier systems, hollow nanocapsules are one of the most interesting carrier systems for thier use in bioimaging and biomedical applications. The unique properties of hollow nanocapsules make them suitable for use in bioimaging. In this article hollow nanocpsules have been classified into four classes based on thier composition: (i) liposomes, (ii) polmersomes and other polymeric hollow nanocapsules, (iii) metallic hollow nanocapsules and (iv) others. The formation and design of these hollow nanocapsules and their diagnostic and therapeutic applications using different agents/imaging probes and imaging modalities is discussed briefly. Hollow nanocapsules have revolutionized the field of biomedical imaging.

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