Powder hematite transformation induced by swift heavy ion irradiation with fluence threshold observation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73625512" target="_blank" >RIV/61989592:15310/24:73625512 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0969806X24004900" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0969806X24004900</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.radphyschem.2024.111998" target="_blank" >10.1016/j.radphyschem.2024.111998</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Powder hematite transformation induced by swift heavy ion irradiation with fluence threshold observation

Popis výsledku v původním jazyce

57Fe transmission Mössbauer (TMS) spectroscopy and powder X-ray diffractometry (XRD), as well as scanning electron microscopy (SEM-EDX) measurements were used to study the effect of swift heavy ion irradiation on powdered hematite mixed with epoxy resin. TMS, XRD and EDX of the samples indicated no significant changes neither in the crystal structure nor in the composition of hematite irradiated with 148 MeV Xe ions with a fluence of 1 × 1013 cm−2 as compared to those of non-irradiated ones. However, about a quarter of the total iron content of the hematite detected by TMS was converted to wüstite and to magnetite superparamagnetic at room temperature upon irradiation with a fluence of 5 × 1013 cm−2. The presence of wüstite was evidenced by XRD in agreement with TMS measurements. Temperature dependence of the hematite TMS measurements indicated a significant change in the Morin transition after irradiation with a fluence of 5 × 1013 cm−2. The results are discussed in terms of the defects produced by irradiation and corresponding changes in the Morin transition and for the hematite to wüstite and magnetite transformation. © 2017 Elsevier Inc. All rights reserved.

Název v anglickém jazyce

Powder hematite transformation induced by swift heavy ion irradiation with fluence threshold observation

Popis výsledku anglicky

57Fe transmission Mössbauer (TMS) spectroscopy and powder X-ray diffractometry (XRD), as well as scanning electron microscopy (SEM-EDX) measurements were used to study the effect of swift heavy ion irradiation on powdered hematite mixed with epoxy resin. TMS, XRD and EDX of the samples indicated no significant changes neither in the crystal structure nor in the composition of hematite irradiated with 148 MeV Xe ions with a fluence of 1 × 1013 cm−2 as compared to those of non-irradiated ones. However, about a quarter of the total iron content of the hematite detected by TMS was converted to wüstite and to magnetite superparamagnetic at room temperature upon irradiation with a fluence of 5 × 1013 cm−2. The presence of wüstite was evidenced by XRD in agreement with TMS measurements. Temperature dependence of the hematite TMS measurements indicated a significant change in the Morin transition after irradiation with a fluence of 5 × 1013 cm−2. The results are discussed in terms of the defects produced by irradiation and corresponding changes in the Morin transition and for the hematite to wüstite and magnetite transformation. © 2017 Elsevier Inc. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

RADIATION PHYSICS AND CHEMISTRY

ISSN

0969-806X

e-ISSN

1879-0895

Svazek periodika

224

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

"111998-1"-"111998-13"

Kód UT WoS článku

001273219900001

EID výsledku v databázi Scopus

2-s2.0-85198515141