k2nif4 structure
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scholarly journals A study of nonstoichiometric oxides in the Ln-Ni-O (Ln=La, Pr, Nd) system

2015 ◽  
Vol 3 (2) ◽  
pp. 89-92 ◽  
Author(s):  
Vadim Kulichenko ◽  
Sergiy Nedilko ◽  
Olexander Dziazko ◽  
Victoria Chornovol
Keyword(s):  
Electrical Conductivity ◽  
Rare Earth ◽  
Phase Analysis ◽  
Oxygen Content ◽  
Rare Earth Oxides ◽  
Tetragonal Symmetry ◽  
Space Group ◽  
X Ray ◽  
K2nif4 Structure ◽  
Semiconducting Behavior

The non-stoichiometric compositions Ln2-xNiO4-3x/2+d (Ln=La, Pr, Nd, 0£x£0,4) were obtained using coprecipitation method from nitrates solutions by K2CO3 followed by calcination of the obtained blend at 950°С. According to X-ray phase analysis compositions in the range La2NiO4.17 – La1.6NiO3.63 are monophase and crystallize in tetragonal symmetry K2NiF4, space group I4/mmm. Nd2-xNiO4-y and Pr2-xNiO4-y in the range 0£x£0,2 are monophase and have orthorombic and monoclinic(correspodingly) distorted K2NiF4 structure. Samples with 0,2<x£0,4 are polyphase and contain Ln2NiO4 (Ln=Pr, Nd), NiO and rare earth oxides. Electrical conductivity of obtained samples have semiconducting behavior and it is strong depended to nonstoichiometric oxygen content.

Search for a Self-Regenerating Perovskite Catalyst with Ab Initio Thermodynamics II: Cu-Doped Layered Perovskites with K2NiF4 Structure

2014 ◽  
Vol 144 (4) ◽  
pp. 736-743 ◽  
Author(s):  
Susumu Yanagisawa ◽  
Atsuya Takeda ◽  
Kouji Inagaki ◽  
Ikutaro Hamada ◽  
Yoshitada Morikawa
Keyword(s):  
Ab Initio ◽  
Perovskite Catalyst ◽  
K2nif4 Structure ◽  
Layered Perovskites

Creation of ionic defects in transition-metal-free oxides with K2NiF4 structure

2014 ◽  
Vol 63 ◽  
pp. 123-129 ◽  
Author(s):  
Ning Ye ◽  
Joshua L. Hertz
Keyword(s):  
Transition Metal ◽  
Metal Free ◽  
K2nif4 Structure

scholarly journals Relationship between Local Structure and Oxide Ionic Diffusion of Nd2NiO4+^|^delta; with K2NiF4 Structure

2014 ◽  
Vol 82 (10) ◽  
pp. 875-879 ◽  
Author(s):  
Toshiaki INA ◽  
Yuki ORIKASA ◽  
Titus MASESE ◽  
Takayuki NAKAO ◽  
Atsushi MINESHIGE ◽  
...  
Keyword(s):  
Local Structure ◽  
Ionic Diffusion ◽  
K2nif4 Structure

Microwave absorption and infrared performance of Sm0.5Sr0.5Co1−xNixO3 (0 ≤ x ≤ 1.0) with the K2NiF4 structure

RSC Advances ◽  
2013 ◽  
Vol 3 (12) ◽  
pp. 3967 ◽  
Author(s):  
Le Chen ◽  
Chunhua Lu ◽  
Yi Lu ◽  
Zhenggang Fang ◽  
Yaru Ni ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
K2nif4 Structure

ChemInform Abstract: New Oxynitrides A2TaO3N (A = Alkaline-Earth Element) with the K2NiF4 Structure Type.

ChemInform ◽  
2010 ◽  
Vol 23 (9) ◽  
pp. no-no
Author(s):  
F. PORS ◽  
R. MARCHAND ◽  
Y. LAURENT
Keyword(s):  
Alkaline Earth ◽  
Earth Element ◽  
Structure Type ◽  
Alkaline Earth Element ◽  
K2nif4 Structure

Microstructures and electric characteristics of SrNdCoO4 ceramics with K2NiF4 structure

2007 ◽  
Vol 21 (1-4) ◽  
pp. 706-710 ◽  
Author(s):  
Y. Y. Liu ◽  
X. M. Chen ◽  
X. Q. Liu ◽  
L. Li
Keyword(s):  
K2nif4 Structure

LnSrScO4 (Ln=La, Ce, Pr, Nd and Sm) systems and structure correlations for A2BO4 (K2NiF4) structure types

2007 ◽  
Vol 180 (1) ◽  
pp. 349-359 ◽  
Author(s):  
Rina Patel ◽  
Charles Simon ◽  
Mark T. Weller
Keyword(s):  
Structure Correlations ◽  
K2nif4 Structure
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