Nickel-induced magnetic behaviour of nano-structured α-Fe2O3, synthesised by facile wet chemical rout

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73589953" target="_blank" >RIV/61989592:15310/18:73589953 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1080/14786435.2018.1490036" target="_blank" >http://dx.doi.org/10.1080/14786435.2018.1490036</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/14786435.2018.1490036" target="_blank" >10.1080/14786435.2018.1490036</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nickel-induced magnetic behaviour of nano-structured α-Fe2O3, synthesised by facile wet chemical rout

Popis výsledku v původním jazyce

We report the synthesis of pristine and nickel containing iron oxide (α-Fe2O3) nanocrystallites by facile environmentally benign wet chemical process. The magnetic behaviour of the samples has been found to change progressively with nickel content. The Mössbauer spectra revealed the precipitation of secondary phase of nickel ferrite (NiFe2O4) at ∼2 wt% nickel contents. The transmission electron micrographs together with asymmetric magnetic hysteresis loop have confirmed the formation of core–shell structure. The Morin temperature of nanostructured α-Fe2O3 as estimated by superconducting quantum interference device has been found to be 257, 245, 247 and 242 K at nickel content of 0, 1, 2 and 4 wt%, respectively. The similar trends of increase/decrease in Morin temperature have been noticed by Mössbauer analysis. Furthermore, below Morin temperature, the temperature range of coexisted antiferromagnetic and ferromagnetic states has been found to increase with increase in nickel content.

Název v anglickém jazyce

Nickel-induced magnetic behaviour of nano-structured α-Fe2O3, synthesised by facile wet chemical rout

Popis výsledku anglicky

We report the synthesis of pristine and nickel containing iron oxide (α-Fe2O3) nanocrystallites by facile environmentally benign wet chemical process. The magnetic behaviour of the samples has been found to change progressively with nickel content. The Mössbauer spectra revealed the precipitation of secondary phase of nickel ferrite (NiFe2O4) at ∼2 wt% nickel contents. The transmission electron micrographs together with asymmetric magnetic hysteresis loop have confirmed the formation of core–shell structure. The Morin temperature of nanostructured α-Fe2O3 as estimated by superconducting quantum interference device has been found to be 257, 245, 247 and 242 K at nickel content of 0, 1, 2 and 4 wt%, respectively. The similar trends of increase/decrease in Morin temperature have been noticed by Mössbauer analysis. Furthermore, below Morin temperature, the temperature range of coexisted antiferromagnetic and ferromagnetic states has been found to increase with increase in nickel content.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

<a href="/cs/project/LO1305" target="_blank" >LO1305: Rozvoj centra pokročilých technologií a materiálů</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

PHILOSOPHICAL MAGAZINE

ISSN

1478-6435

e-ISSN

—

Svazek periodika

98

Číslo periodika v rámci svazku

26

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

2425-2439

Kód UT WoS článku

000441058500004

EID výsledku v databázi Scopus

2-s2.0-85049215175