Structural and Magnetic Properties of Nanosized La0.8Ca0.2Mn1-xFexO3 Particles (0 {= x {= 0.2) Prepared by Sol-Gel Method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10312436" target="_blank" >RIV/00216208:11310/15:10312436 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10948-015-3030-9" target="_blank" >http://dx.doi.org/10.1007/s10948-015-3030-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10948-015-3030-9" target="_blank" >10.1007/s10948-015-3030-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structural and Magnetic Properties of Nanosized La0.8Ca0.2Mn1-xFexO3 Particles (0 {= x {= 0.2) Prepared by Sol-Gel Method

Popis výsledku v původním jazyce

The nanosized La0.8Ca0.2Mn1-xFexO3 (0 {= x {= 0.2) particles were synthesized by sol-gel Pechini method and characterized by X-ray diffraction (XRD) and transmission electronic microscopy (TEM). The magnetic properties have been investigated using magnetic measurements and Mossbauer spectroscopy. The samples exhibit an average crystallite size of 60 nm with narrow distribution and crystallize within the orthorhombic structure (Pnma space group) From the magnetic point of view, a transition from the ferromagnetic (FM) to paramagnetic (PM) phase at T-C depending on the temperature is observed. The presence of manganese in the structure leads to an increase of the Curie temperature as well as to spontaneous magnetization. Mossbauer spectra show 70 % of Fe3+ paramagnetically coupled but also 30 % Fe3+ in unexpected strong magnetic interaction. For less iron content the paramagnetic state evidences Griffiths phase due to existence of ferromagnetic clusters.

Název v anglickém jazyce

Structural and Magnetic Properties of Nanosized La0.8Ca0.2Mn1-xFexO3 Particles (0 {= x {= 0.2) Prepared by Sol-Gel Method

Popis výsledku anglicky

The nanosized La0.8Ca0.2Mn1-xFexO3 (0 {= x {= 0.2) particles were synthesized by sol-gel Pechini method and characterized by X-ray diffraction (XRD) and transmission electronic microscopy (TEM). The magnetic properties have been investigated using magnetic measurements and Mossbauer spectroscopy. The samples exhibit an average crystallite size of 60 nm with narrow distribution and crystallize within the orthorhombic structure (Pnma space group) From the magnetic point of view, a transition from the ferromagnetic (FM) to paramagnetic (PM) phase at T-C depending on the temperature is observed. The presence of manganese in the structure leads to an increase of the Curie temperature as well as to spontaneous magnetization. Mossbauer spectra show 70 % of Fe3+ paramagnetically coupled but also 30 % Fe3+ in unexpected strong magnetic interaction. For less iron content the paramagnetic state evidences Griffiths phase due to existence of ferromagnetic clusters.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Superconductivity and Novel Magnetism

ISSN

1557-1939

e-ISSN

—

Svazek periodika

28

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

2401-2408

Kód UT WoS článku

000357460600022

EID výsledku v databázi Scopus

2-s2.0-84945483052