Magnetic and Ferroelectric Properties of BiCrO 3 from First-Principles Calculations

2014 ◽  
Vol 31 (10) ◽  
pp. 107501 ◽  
Author(s):  
Jun Ding ◽  
Xiu-Bao Kang ◽  
Li-Wei Wen ◽  
Hai-Dong Li ◽  
Jian-Min Zhang
2010 ◽  
Vol 445 ◽  
pp. 59-62 ◽  
Author(s):  
Yumiko Oshima ◽  
Yuuki Kitanaka ◽  
Yuji Noguchi ◽  
Masaru Miyayama

0.995(Bi1/2Na1/2)TiO3-0.005Bi(B’,B”)O3 solid-solution ceramics (B’,B” denote Zn, Mg, Ni, Ti, Nb) were fabricated and their ferroelectric properties were investigated. Based on the structural characteristics of Bi(B’,B”)O3 analyzed by first-principles calculations, a materials design for obtaining a large piezoelectric strain is proposed: an index Z= Ps∙(ε33*∙s33)1/2, where Ps is spontaneous polarization, ε33* is relative permittivity and s33 is elastic compliance. A positive correlation was observed between Z and effective piezoelectric constant d33* observed for strain measurements.


2020 ◽  
Vol 187 ◽  
pp. 8-12
Author(s):  
H´Linh Hmŏk ◽  
E. Martínez-Aguilar ◽  
J. Ribas-Ariño ◽  
J.M. Siqueiros Beltrones

2018 ◽  
Vol 44 (8) ◽  
pp. 9684-9688 ◽  
Author(s):  
Bingcheng Luo ◽  
Xiaohui Wang ◽  
Enke Tian ◽  
Hongzhou Song ◽  
Haimo Qu ◽  
...  

2014 ◽  
Vol 52 (12) ◽  
pp. 1025-1029
Author(s):  
Min-Wook Oh ◽  
Tae-Gu Kang ◽  
Byungki Ryu ◽  
Ji Eun Lee ◽  
Sung-Jae Joo ◽  
...  

2019 ◽  
Author(s):  
Michele Pizzocchero ◽  
Matteo Bonfanti ◽  
Rocco Martinazzo

The manuscript addresses the issue of the structural distortions occurring at multiple bonds between high main group elements, focusing on group 14. These distortions are known as trans-bending in silenes, disilenes and higher group analogues, and buckling in 2D materials likes silicene and germanene. A simple but correlated \sigma + \pi model is developed and validated with first-principles calculations, and used to explain the different behaviour of second- and higher- row elements.


2019 ◽  
Author(s):  
Henrik Pedersen ◽  
Björn Alling ◽  
Hans Högberg ◽  
Annop Ektarawong

Thin films of boron nitride (BN), particularly the sp<sup>2</sup>-hybridized polytypes hexagonal BN (h-BN) and rhombohedral BN (r-BN) are interesting for several electronic applications given band gaps in the UV. They are typically deposited close to thermal equilibrium by chemical vapor deposition (CVD) at temperatures and pressures in the regions 1400-1800 K and 1000-10000 Pa, respectively. In this letter, we use van der Waals corrected density functional theory and thermodynamic stability calculations to determine the stability of r-BN and compare it to that of h-BN as well as to cubic BN and wurtzitic BN. We find that r-BN is the stable sp<sup>2</sup>-hybridized phase at CVD conditions, while h-BN is metastable. Thus, our calculations suggest that thin films of h-BN must be deposited far from thermal equilibrium.


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