First Principles Investigation of Novel Ferroelectric Perovskite Alloys Based on A-site Substitution

2003 ◽  
Author(s):  
S. V. Halilov
2017 ◽  
Vol 26 (1) ◽  
pp. 53-68
Author(s):  
Mark Byron

Scholarly research over the last twenty years has marked a profound shift in the understanding of Beckett's sources, his methods of composition, and his attitudes towards citation and allusion in manuscript documents and published texts. Such landmark studies as James Knowlson's biography, Damned to Fame (1996), and John Pilling's edition of the Dream Notebook (1999), and the availability of primary documents such as Beckett's reading notes at Reading and Trinity libraries, opened the way for a generation of work rethinking Beckett's textual habitus. Given this profound reappraisal of Beckett's material processes of composition, this paper seeks to show that Beckett's late prose work, Worstward Ho, represents a profound mediation on writing, self-citation, and habits of allusion to the literary canon. In its epic gestures, it reorients the heavenly aspiration of Dante's Commedia earthwards, invoking instead the language of agriculture, geology and masonry in the process of creating and decreating its imaginative space. Beckett's earthy epic invokes and erodes the first principles of narrative by way of philology as well as by means of deft reference to literary texts and images preoccupied with land, farming, and geological formations. This process is described in the word corrasion, a geological term referring to the erosion of rock by various forms of water, ice, snow and moraine. Textual excursions into philology in Worstward Ho also unearth the strata comprising Beckett's corpus (in particular Imagination Dead Imagine, The Lost Ones, and Ill Seen Ill Said), as well as the rock or canon upon which his own literary production is built. A close reading of Worstward Ho turns up a number of shrewd allusions to the King James Bible and Thomas Browne, as one might expect, but also perhaps surprisingly sustained affinities with the literary sensibilities of Alexander Pope and the poetry of S. T. Coleridge. The more one digs, the more Beckett's ‘little epic’ seems to become one of earthworks, bits of pipe, and masonry, a site and record of literary sedimentation.


RSC Advances ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 1801-1807 ◽  
Author(s):  
Hongping Li ◽  
Shuai Liu ◽  
Lin Chen ◽  
Jiandong Zhao ◽  
Beibei Chen ◽  
...  

We investigate electrical and magnetic properties of an A-site-ordered perovskite SrCu3Fe4O12 and clarify its negative thermal expansion mechanism.


2017 ◽  
Vol 19 (37) ◽  
pp. 25245-25251 ◽  
Author(s):  
Robert A. Evarestov ◽  
Alexander Platonenko ◽  
Denis Gryaznov ◽  
Yuri F. Zhukovskii ◽  
Eugene A. Kotomin

Site symmetry analysis allows one to define four possible spatial configurations for inserting O atoms into the α-Al2O3 crystalline lattice.


2011 ◽  
Vol 291-294 ◽  
pp. 1208-1211 ◽  
Author(s):  
Zi Shu Gao ◽  
Hua An ◽  
Li Lv ◽  
Li Chun Hou ◽  
Hui Han ◽  
...  

The adsorption of CH4onto the surfaces of perovskite-type catalysts ABO3( A=La, Ba; B=Zr, Co, Ce) was investigated by a density functional theory based on the first-principles in this paper. The absorption mechanism was derived by population and electronic states analysis on the basis of the electronic and surface structure calculations. For A=Ba and B=Zr, the frontier energy state was found to the key factor in controlling the adsorption behavior of CH4absorbed on (001) surfaces, which is mainly contributed by oxygen and B-site ions. The most favorite adsorption site for CH4was located at B-sites of perovskite catalysts ABO3, where the A-site ions adjust the charge of B-site ions and moreover affect the CH4adsorption.


2016 ◽  
Vol 7 (8) ◽  
pp. 5108-5112 ◽  
Author(s):  
Gregor Kieslich ◽  
Shohei Kumagai ◽  
Alexander C. Forse ◽  
Shijing Sun ◽  
Sebastian Henke ◽  
...  

We report how mechanical and dynamical properties in formate-based perovskites can be manipulated by the preparation of an A-site solid-solution.


2019 ◽  
Vol 7 (32) ◽  
pp. 10059-10065 ◽  
Author(s):  
Wenxuan Wang ◽  
Wei Sun ◽  
Guangbiao Zhang ◽  
Zhenxiang Cheng ◽  
Yuanxu Wang

The spin-induced ferroelectric polarization at magnetic domain walls is dependent on the A-site ionic radius of AFeO3.


Sign in / Sign up

Export Citation Format

Share Document