Structural, magnetic and thermal characterization of Fe50Se50 powders obtained by mechanical alloying

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10410666" target="_blank" >RIV/00216208:11310/20:10410666 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=LxRf6JnjUp" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=LxRf6JnjUp</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-019-08772-x" target="_blank" >10.1007/s10973-019-08772-x</a>

Result language

angličtina

Original language name

Structural, magnetic and thermal characterization of Fe50Se50 powders obtained by mechanical alloying

Original language description

In this paper, Fe50Se50 alloy powders were synthesized from pure elemental powder by mechanical allowing. The structure, microstructure, morphology, chemical composition and thermal behavior at a function of milling times (0-39 h) were investigated by X-ray diffraction (XRD), scanning electron microscopy attached with energy-dispersive spectroscopy and differential scanning calorimetry (DSC). In addition, the interaction hyperfine and magnetic proprieties was examined by transmission Mossbauer spectroscopy (TMS) and thermomagnetic measurements (VSM) respectively. For milling times up to 6 h, the results of refinement of the X-ray diffraction pattern by MAUD software reveal the formation of the beta-FeSe hexagonal, amorphous selenium and nanocrystalline alpha-Fe. The DSC curves show several exothermic and endothermic peaks associated with various phases&apos; transitions such as the exothermic peak at 103 degrees C related to crystallization amorphous selenium. However, after prolonging the milling time to 39 h, the XRD shows the formation of alpha-FeSe phase tetragonal which has plenty of technological interests especially the superconductivity. The Mossbauer spectroscopy confirmed the formation the two-phase paramagnetic hexagonal beta-FeSe and alpha-FeSe tetragonal, according to the XRD and DSC. Measurement of magnetization (VSM) displays that saturation magnetization (MS) decreases as the milling time increases.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

—

Volume of the periodical

140

Issue of the periodical within the volume

1

Country of publishing house

HU - HUNGARY

Number of pages

10

Pages from-to

53-62

UT code for WoS article

000520712700003

EID of the result in the Scopus database

2-s2.0-85073956877