Results 101 to 110 of about 7,335 (259)

Effect of large mechanical stress on the magnetic properties of embedded Fe nanoparticles

Beilstein Journal of Nanotechnology, 2011
Magnetic nanoparticles are promising candidates for next generation high density magnetic data storage devices. Data storage requires precise control of the magnetic properties of materials, in which the magnetic anisotropy plays a dominant role.
Srinivasa Saranu, Sören Selve, Ute Kaiser, Luyang Han, Ulf Wiedwald, Paul Ziemann, Ulrich Herr   +6 more
doaj   +1 more source

Exploring Reaction Conditions to Improve the Magnetic Response of Cobalt-Doped Ferrite Nanoparticles

Nanomaterials, 2018
With the aim of studying the influence of synthesis parameters in structural and magnetic properties of cobalt-doped magnetite nanoparticles, Fe3−xCoxO4 (0 < x < 0.15) samples were synthetized by thermal decomposition method at different reaction ...
Itziar Galarreta, Maite Insausti, Izaskun Gil de Muro, Idoia Ruiz de Larramendi, Luis Lezama   +4 more
doaj   +1 more source

Superparamagnetism in MgO-based magnetic tunnel junctions with a thin pinned ferromagnetic electrode

, 2010
MgO-based magnetic tunnel junctions have been fabricated with a thin Co40Fe40B20 (CoFeB) layer in the pinned synthetic antiferromagnetic CoFe/Ru/CoFeB stack.
COEY, JOHN, VENKATESAN, MUNUSWAMY, FENG, JIA-FENG   +2 more
core  

Novel Aspects of Magnetic Interactions in a Macroscopic 3D Nanoparticle-Based Crystal

, 2010
We report magnetic measurements on a macroscopic three-dimensional fcc array of iron-oxide nanoparticles. We observe typical nanomagnetism for the randomly packed configuration of nanoparticles, including dynamical freezing and superparamagnetism.
Kasyutich, OI, J van, Lierop, RD, Desautels, BW, Southern   +3 more
core   +1 more source

IRM Quarterly, Volume 19, Number 3 (Fall 2009). Cover article: Interpretation of Low-Temperature Data Part 1: Superparamagnetism and Paramagnetism

, 2009
1 electronic resource (PDF)Bowles, Julie; Jackson, Mike; Chen, Amy; Solheid, Peat. (2009). IRM Quarterly, Volume 19, Number 3 (Fall 2009). Cover article: Interpretation of Low-Temperature Data Part 1: Superparamagnetism and Paramagnetism.
Jackson, Mike, Chen, Amy, Bowles, Julie, Solheid, Peat   +3 more
core  

Superparamagnetism of Baked Clays Containing Polymorphs of Iron Oxides: Experimental Study and Theoretical Modeling

Magnetochemistry
A comprehensive study of the magnetic properties of baked clays containing ferrimagnetic particles in various magnetic states, including superparamagnetic, has been carried out in this work.
Petr Kharitonskii, Andrei Krasilin, Nadezhda Belskaya, Svetlana Yanson, Nikita Bobrov, Andrey Ralin, Kamil Gareev, Nikita Zolotov, Dmitry Zaytsev, Elena Sergienko   +9 more
doaj   +1 more source

Actuating superparamagnetic nanoparticle monolayers

Proceedings of the National Academy of Sciences
Magnetically responsive, mechanically flexible microstructures are desirable for applications ranging from smart sensors to remote-controlled actuation for surgery or robotics. Embedding magnetic nanoparticles into a thin matrix of elastic material enables high flexibility while exploiting the magnetic response of the individual particles.
Edward P. Esposito, Hector Manuel Lopez Rios, Monica Olvera de la Cruz, Heinrich M. Jaeger   +3 more
openaire   +3 more sources

SUPERPARAMAGNETISM IN GRANULAR COMPOUNDS AS SEEN BY MÖSSBAUER SPECTROSCOPY

, 1979
Les films granulaires /1/ sont des matériaux composites constitués de particules de métal (15 à 200 Å) dispersés dans une matrice amorphe et isolante. Les composés étudiés Fe-SiO2 /2/, Fe-Al2O3 et Fe-ZrO2 ont été préparés par copulvérisation de Fe et de ...
C. Sella, P. Gibart, P. Renaudin, J.L. Dormann   +3 more
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Ferrites nanoparticles MFe₂O₄ (M = Ni and Zn): hydrothermal synthesis and magnetic properties

Boletín de la Sociedad Española de Cerámica y Vidrio, 2008
MFe2O4 (M = Ni and Zn) nanoparticles were prepared by the hydrothermal method. The obtained samples were characterized by X-ray and electron diffraction, Scanning and Transmission Electron Microscopy and Mössbauer spectroscopy.
Pérez Mazariego, J. L., Marquina, M. L., Marquina, V., Gómez, R., Blanco Gutiérrez, V., Torralvo Fernández, M. J., Sáez Puche, R., Ridaura, R.   +7 more
doaj  

Superparamagnetism in Red Sandstones [PDF]

Geophysical Journal International, 1961
Summary Susceptibility measurements down to liquid hydrogen temperatures have been made on rocks with (a) unstable and (b) stable natural remanent magnetization. The former follow a Curie Law and this indicates that most of the magnetic content is apparently paramagnetic.
openaire   +1 more source