Kinetic Growth of One-Dimensional Zinc-Blende CdTe Nanocrystals by Aqueous Synthesis at Low Temperature

2009 ◽  
Vol 9 (12) ◽  
pp. 5077-5082 ◽  
Author(s):  
Tao Wang ◽  
Zhengguo Jin ◽  
Yamin Shi ◽  
Wenle Li ◽  
Jingxia Yang
1981 ◽  
Vol 46 (18) ◽  
pp. 1213-1216 ◽  
Author(s):  
H. v. Löhneysen ◽  
H. J. Schink ◽  
W. Arnold ◽  
H. U. Beyeler ◽  
L. Pietronero ◽  
...  

1991 ◽  
Vol 05 (01n02) ◽  
pp. 3-30 ◽  
Author(s):  
J. Carmelo ◽  
P. Horsch ◽  
P.A. Bares ◽  
A.A. Ovchinnikov

The Landau-Luttinger liquid formulation is used to investigate the physics of the one-dimensional Hubbard model in a magnetic field of arbitrary strength H. The low lying charge and spin excitations are studied. A novel branch of sound wave-like spin excitations arises for H>0. The low temperature thermodynamics is considered in some detail.


Author(s):  
Raul Fernando Cuevas Rojas ◽  
Miguel Angel González Balanta ◽  
Silvio José Prado ◽  
Pablo Henrique Menezes ◽  
Lauro Antonio Pradela Filho ◽  
...  

2019 ◽  
Author(s):  
Roberto Köferstein

A facile method to prepare nanoscaled BaFe0.5Nb0.5O3 via synthesis in boiling NaOH solution is describedherein. The nano-crystalline powder has a high specific surface area of 55 m2 g−1 and a crystallite sizeof 15 nm. The as-prepared powder does not show any significant crystallite growth up to 700 ◦C. Theactivation energy of the crystallite growth process was calculated as 590 kJ mol−1. Dense ceramics can beobtained either after sintering at 1200 ◦C for 1 h or after two-step sintering at 1000 ◦C for 10 h. The averagegrain sizes of ceramic bodies can be tuned between 0.23 µm and 12 µm. The thermal expansion coefficientwas determined as 11.4(3)·10−6 K−1. The optical band gap varies between 2.90(5) and 2.63(3) eV. Magneticmeasurements gave a Néel temperature of 20 K. Depending on the sintering regime, the ceramic samplesreach permittivity values between 2800 and 137,000 at RT and 1 kHz.


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