Development of novel FePt/nanodiamond hybrid nanostructures: L1(0) phase size-growth suppression and magnetic properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33159796" target="_blank" >RIV/61989592:15310/16:33159796 - isvavai.cz</a>

Result on the web

<a href="http://link.springer.com/article/10.1007/s11051-016-3424-z" target="_blank" >http://link.springer.com/article/10.1007/s11051-016-3424-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11051-016-3424-z" target="_blank" >10.1007/s11051-016-3424-z</a>

Result language

angličtina

Original language name

Development of novel FePt/nanodiamond hybrid nanostructures: L1(0) phase size-growth suppression and magnetic properties

Original language description

new type of hybrid nanomaterial composed of magnetic FePt nanoparticles grown on the surface of nanodiamond nanotemplate assemblies is described for the first time. Post annealing in vacuum of the as-made nanomaterial bearing cubic A1 soft magnetic FePt nanoparticles leads to the development of FePt nanoparticles with tetragonal L1(0) hard, magnetic-phase characteristics, leaving untouched the nanodiamond nanotemplate assemblies. X-ray diffraction, high-resolution transmission electron microscopy including chemical mapping (HRTEM/HAADF), magnetization measurements, and 57 Fe Mossbauer spectroscopy data show that the magnetic FePt nanoparticles, with average sizes of 3 and 8 nm in the as-made and annealed hybrids, respectively, are homogenously distributed within the nanodiamond template in both nanomaterials. As a consequence, their structural, morphological, and magnetic properties differ significantly from the corresponding properties of the nonsupported (free) as-made and annealed FePt nanoparticles with average sizes of 6 and 32 nm, respectively, developed by the same methods. This spatial isolation suppresses the size-growth of the FePt nanoparticles during the post-annealing procedure, triggering superparamagnetic relaxation phenomena, which are exposed as a combination of hard and soft magnetic-phase characteristics.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Nanoparticle Research

ISSN

1388-0764

e-ISSN

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Volume of the periodical

18

Issue of the periodical within the volume

5

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

19

Pages from-to

115

UT code for WoS article

000374960600001

EID of the result in the Scopus database

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