Effects of size reduction on the structure and magnetic properties of core-shell Ni3Si/silica nanoparticles prepared by electrochemical synthesis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F14%3A00425774" target="_blank" >RIV/61389005:_____/14:00425774 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jallcom.2013.09.035" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2013.09.035</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2013.09.035" target="_blank" >10.1016/j.jallcom.2013.09.035</a>

Result language

angličtina

Original language name

Effects of size reduction on the structure and magnetic properties of core-shell Ni3Si/silica nanoparticles prepared by electrochemical synthesis

Original language description

anostructured nickel silicides find application in electronics, high-temperature alloys, electrode materials and catalysis. In this work, the effect of size reduction on the structure and magnetic properties of beta(1)-Ni3Si intermetallic phase nanoparticles is studied. Electrochemical selective phase dissolution (ESPD) was used to produce the beta(1)-Ni3Si nanoparticles of different sizes (from 20 to 215 nm) by extracting beta(1) nano-size precipitates from two-phase Ni-Si and Ni-Si-Al precursor alloys. The extracted nanoparticles have a core-shell structure with beta(1)-Ni3Si core and an amorphous silica shell. Particles size and shape are controlled by the composition and thermal treatment of the precursor alloys. Precipitates size is scaled withoutmodifying the ordered L1(2) lattice structure. The bulk beta(1)-Ni3Si is ferromagnetic below 260 K with low saturation magnetization (2 emu/g), while the core-shell Ni3Si/silica nanoparticles are superparamagnetic at low temperatures (<9

Czech name

—

Czech description

—

Type

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

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

—

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

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

Name of the periodical

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Volume of the periodical

584

Issue of the periodical within the volume

JAN

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

119-127

UT code for WoS article

000327135400018

EID of the result in the Scopus database

—