scholarly journals Contrasting the magnetism in La2−xSrxFeCoO6(x=0,1,2) double perovskites: The role of electronic and cationic disorder

2019 ◽  
Vol 99 (18) ◽  
Author(s):  
G. R. Haripriya ◽  
C. M. N. Kumar ◽  
R. Pradheesh ◽  
L. M. Martinez ◽  
C. L. Saiz ◽  
...  
Keyword(s):  
Double Perovskites ◽  
Cationic Disorder

scholarly journals The role of cationic disorder on the magnetic properties of double perovskites(Ca,Sr)2-xLaxFeIrO6

2009 ◽  
Vol 404 (19) ◽  
pp. 3285-3288 ◽  
Author(s):  
L. Bufaiçal ◽  
L. Mendonça Ferreira ◽  
R. Lora-Serrano ◽  
P.G. Pagliuso ◽  
A. Caytuero ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Double Perovskites ◽  
Cationic Disorder

The role of π-bonding on the high temperature structure of the double perovskites Ba2CaUO6and BaSrCaUO6

2015 ◽  
Vol 44 (36) ◽  
pp. 16036-16044 ◽  
Author(s):  
Emily Reynolds ◽  
Gordon J. Thorogood ◽  
Maxim Avdeev ◽  
Helen E. A. Brand ◽  
Qinfen Gu ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Temperature ◽  
Neutron Diffraction ◽  
Temperature Structure ◽  
Double Perovskites ◽  
Phase Transition Behavior ◽  
X Ray ◽  
Progressive Loss ◽  
Octahedral Tilting

High temperature synchrotron X-ray and neutron diffraction powder diffraction studies of the uranium perovskites Ba2CaUO6and BaSrCaUO6reveal unusual phase transition behavior associated with the progressive loss of cooperative octahedral tilting.

A role of B-site cation on structural and transport properties of La2BMnO6 (B= Cr, Fe, Co, Ni, Cu, Zn) double perovskites

2020 ◽  
Author(s):  
Javed Ahmad ◽  
Mozammal Iqbal ◽  
Jamshaid Alam Khan ◽  
Syed Hamad Bukhari ◽  
Tufiq Jamil ◽  
...  
Keyword(s):  
Transport Properties ◽  
Double Perovskites

Cationic ordering and role of A-site ion in manganese-based double perovskites

2008 ◽  
Vol 103 (7) ◽  
pp. 07E315 ◽  
Author(s):  
M. P. Singh ◽  
K. D. Truong ◽  
J. Laverdière ◽  
S. Charpentier ◽  
S. Jandl ◽  
...  
Keyword(s):  
Double Perovskites ◽  
A Site

scholarly journals Efficient Emission in Halide Layered Double Perovskites: The Role of Sb3+ Substitution in Cs4Cd1–xMnxBi2Cl12 Phosphors

2020 ◽  
Author(s):  
Brenda Vargas ◽  
Eduardo Coutiño-Gonzalez ◽  
Oscar Ovalle-Encinia ◽  
Citlali Sánchez-Aké ◽  
Diego Solis-Ibarra
Keyword(s):  
Optoelectronic Properties ◽  
Double Perovskites ◽  
Spin Orbit Coupling ◽  
Fixed Amount ◽  
Electronic Delocalization ◽  
The Subject ◽  
Halide Perovskites ◽  
Pl Emission ◽  
Intense Research

Layered halide perovskites and double perovskites optoelectronic properties have recently been the subject of intense research. Layered double perovskites represent the merging of both worlds, and as such, have the potential to further expand the already vast space of optoelectronic properties and applications of halide perovskites. Despite having more than 40 known members, to date, only the <111>-oriented layered double perovskites: Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<sub>x</sub><b>Bi</b><sub>2</sub>Cl<sub>12</sub>, have shown efficient photoluminescence (PL). In this work, we replaced Bi with Sb to further investigate the electronic structure and PL properties of these materials, resulting in two new families of layered inorganic perovskites alloys with full solubility. The first family, Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<b>Sb</b><sub>2</sub>Cl<sub>12</sub>, exhibits a PL emission at 605 nm ascribed to Mn<sup>2+</sup> centers in octahedral coordination, and a maximum photoluminescence quantum yield PLQY of 28.5%. The second family of alloys, also with full solubility, Cs<sub>4</sub>Cd<sub>0.8</sub>Mn<sub>0.2</sub>(Sb<sub>1</sub>–<sub>y</sub>Bi<sub>y</sub>)<sub>2</sub>Cl<sub>12</sub>, contains a fixed amount of Mn<sup>2+</sup> and Cd<sup>2+</sup> cations but different concentrations of the trivalent metals. This variability allows the tuning of the PL emission from 603 nm to 614 nm. We show that the decreased efficiency of the Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<sub>x</sub>Sb<sub>2</sub>Cl<sub>12</sub>family compared to Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<sub>x</sub><b>Bi</b><sub>2</sub>Cl<sub>12</sub>, is mostly due to a decreased spin-orbit coupling in Sb and the subsequent increased electronic delocalization compared to the Bi alloys, reducing the energy transfer to Mn<sup>2+</sup> centers. This work lays out a roadmap to understand and achieve high photoluminescence efficiencies in layered double perovskites.<p></p>

Role of Antisite Disorder, Rare-Earth Size, and Superexchange Angle on Band Gap, Curie Temperature, and Magnetization of R2NiMnO6 Double Perovskites

2019 ◽  
Vol 1 (1) ◽  
pp. 141-153 ◽  
Author(s):  
Mohd Nasir ◽  
Sunil Kumar ◽  
Nirmalendu Patra ◽  
Dibyendu Bhattacharya ◽  
Shambhu Nath Jha ◽  
...  
Keyword(s):  
Rare Earth ◽  
Curie Temperature ◽  
Band Gap ◽  
Double Perovskites ◽  
Antisite Disorder

Exploring the role of Fe substitution on electronic, structural, and magnetic properties of La2NiMnO6 double perovskites

2021 ◽  
Vol 127 (3) ◽  
Author(s):  
Mohammad Nasir ◽  
Mahmud Khan ◽  
E. G. Rini ◽  
Sunday Arome Agbo ◽  
Somaditya Sen
Keyword(s):  
Magnetic Properties ◽  
Double Perovskites ◽  
Structural And Magnetic Properties ◽  
Fe Substitution
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