Perovskite solid solutions La0.75Bi0.25Fe1-xCrxO3: Preparation, structural, and magnetic properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F17%3A00477646" target="_blank" >RIV/61389005:_____/17:00477646 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jssc.2017.06.031" target="_blank" >http://dx.doi.org/10.1016/j.jssc.2017.06.031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jssc.2017.06.031" target="_blank" >10.1016/j.jssc.2017.06.031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Perovskite solid solutions La0.75Bi0.25Fe1-xCrxO3: Preparation, structural, and magnetic properties

Popis výsledku v původním jazyce

Solid solutions of La(0.7)sEi(0.25)Fe(1-x)Cr(x)O(3) (x = 0.1, 0.25, 0.5, and 0.75) prepared by conventional solid state reaction have been studied by means of X-ray powder diffraction (XRPD), neutron powder diffraction (NPD) and magnetic measurements. The NPD and XRPD patterns indicate orthorhombic structure (space group Pnma) for all compositions in the whole temperature range investigated (4-900 K). The lattice parameters of La0.75Bi0.25Fe1-xCrxO3 were found to decrease with the Cr content. It was established that the Fe3+ and Cr3+ cations are randomly positioned at the B-site of the perovskite structure. nnAll samples order antiferromagnetically below transition temperatures that decrease with increasing Cr content, from around 700 K for x = 0.1 to about 300 K for x = 0.75. The antiferromagnetic arrangement of the Fe3+/Cr3+ magnetic moments in the B-site is of G-type along the x-axis (Gx mode) with propagation vector k = (0,0,0) for all concentrations of Cr. Effects of the composition on several structural distortion parameters were investigated and an anomalous variation of the octahedral deformation with Cr content was found. Whilst the overall octahedral deformation varies irregularly with increasing Cr content, the octahedral tilting was found to decrease monotoneously.

Název v anglickém jazyce

Perovskite solid solutions La0.75Bi0.25Fe1-xCrxO3: Preparation, structural, and magnetic properties

Popis výsledku anglicky

Solid solutions of La(0.7)sEi(0.25)Fe(1-x)Cr(x)O(3) (x = 0.1, 0.25, 0.5, and 0.75) prepared by conventional solid state reaction have been studied by means of X-ray powder diffraction (XRPD), neutron powder diffraction (NPD) and magnetic measurements. The NPD and XRPD patterns indicate orthorhombic structure (space group Pnma) for all compositions in the whole temperature range investigated (4-900 K). The lattice parameters of La0.75Bi0.25Fe1-xCrxO3 were found to decrease with the Cr content. It was established that the Fe3+ and Cr3+ cations are randomly positioned at the B-site of the perovskite structure. nnAll samples order antiferromagnetically below transition temperatures that decrease with increasing Cr content, from around 700 K for x = 0.1 to about 300 K for x = 0.75. The antiferromagnetic arrangement of the Fe3+/Cr3+ magnetic moments in the B-site is of G-type along the x-axis (Gx mode) with propagation vector k = (0,0,0) for all concentrations of Cr. Effects of the composition on several structural distortion parameters were investigated and an anomalous variation of the octahedral deformation with Cr content was found. Whilst the overall octahedral deformation varies irregularly with increasing Cr content, the octahedral tilting was found to decrease monotoneously.

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

<a href="/cs/project/LM2015056" target="_blank" >LM2015056: Centrum urychlovačů a jaderných analytických metod</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Solid State Chemistry

ISSN

0022-4596

e-ISSN

—

Svazek periodika

254

Číslo periodika v rámci svazku

OCT

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

166-177

Kód UT WoS článku

000408181800025

EID výsledku v databázi Scopus

2-s2.0-85025464607