scholarly journals The effect of stoichiometry on the structural, thermal and electronic properties of thermally decomposed nickel oxide

RSC Advances ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 5882-5890 ◽  
Author(s):  
P. Dubey ◽  
Netram Kaurav ◽  
Rupesh S. Devan ◽  
G. S. Okram ◽  
Y. K. Kuo
Keyword(s):  
Thermal Decomposition ◽  
Nickel Oxide ◽  
Electronic Properties

A thermal decomposition route with different sintering temperatures was employed to prepare non-stoichiometric nickel oxide (Ni1−δO) from Ni(NO3)2·6H2O as a precursor.

Structural, magnetic, and electronic properties of iron selenide Fe6-7Se8 nanoparticles obtained by thermal decomposition in high-temperature organic solvents

2014 ◽  
Vol 141 (4) ◽  
pp. 044704 ◽  
Author(s):  
I. S. Lyubutin ◽  
Chun-Rong Lin ◽  
K. O. Funtov ◽  
T. V. Dmitrieva ◽  
S. S. Starchikov ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
High Temperature ◽  
Electronic Properties ◽  
Organic Solvents ◽  
Iron Selenide

Framework Stoichiometry and Electrical Conductivity of Si-Ge Based Structure-I Clathrates

2000 ◽  
Vol 626 ◽  
Author(s):  
Ganesh K. Ramachandran ◽  
Paul F. McMillan ◽  
Jianjun Dong ◽  
Jan Gryko ◽  
Otto F. Sankey
Keyword(s):  
Electrical Conductivity ◽  
Thermal Decomposition ◽  
Electronic Properties ◽  
Lattice Constant ◽  
Structural Characterization ◽  
Periodic Table ◽  
Preliminary Results ◽  
Tetrahedral Sites ◽  
Semiconducting Behavior

ABSTRACTWe report the synthesis and structural characterization of two Structure I clathrates in the KSi and Rb-Si systems. The alkali-Si clathrates are fully stoichiometric at the framework sites, i.e., devoid of framework vacancies. This is in sharp contrast to the analogous K-Ge, Rb-Ge and Rb-Sn, Cs-Sn systems, where vacancies are formed at one-third of the crystallographic 6c tetrahedral sites. This is rationalized in terms of Zintl-Klemm rules to remove the tetrahedral atom of its hypervalency. The contrasting behavior is understood in terms of weaker Tt-Tt (Tt – tetrelide, Si, Ge, Sn) bonding as one descends the periodic table, and results in poorly metallic conductivities for vacancy-free K7Si46 and Rb6Si46, but semiconducting behavior of K8Ge44. The observation suggests tuning of the electronic properties of Tt clathrates by substitution of (Si,Ge,Sn) on framework sites, for thermoelectric applications. We describe preliminary results designed to synthesize “mixed” Si-Ge clathrate structures. Thermal decomposition of K2SiGe results in formation of a Structure I clathrate with mixing of Si and Ge on framework sites. The lattice constant ao = 10.523(6) Å, is intermediate between those of K8Si46 and K8Ge44.

β-Nickel Hydroxide Nanosheets and Their Thermal Decomposition to Nickel Oxide Nanosheets

2004 ◽  
Vol 108 (11) ◽  
pp. 3488-3491 ◽  
Author(s):  
Zhen-Hua Liang ◽  
Ying-Jie Zhu ◽  
Xian-Luo Hu
Keyword(s):  
Thermal Decomposition ◽  
Nickel Oxide ◽  
Nickel Hydroxide

scholarly journals Local Geometry and Electronic Properties of Nickel Nanoparticles Prepared via Thermal Decomposition of Ni-MOF-74

2018 ◽  
Vol 57 (16) ◽  
pp. 10072-10080 ◽  
Author(s):  
Akhil Tayal ◽  
Yanna Chen ◽  
Chulho Song ◽  
Satoshi Hiroi ◽  
L. S. R. Kumara ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Electronic Properties ◽  
Nickel Nanoparticles ◽  
Local Geometry
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