Orthorhombic to Cubic Phase Transition in La1?xCaxMnO3 Perovskites

Abstract

For governments, pre‐emptive strategies for handling communications and risk management have become essential for public perception, which plays such a significant part in structuring political responses to disaster and conflict. In an interview with guest‐editor Charles Rice, former US Secretary of Homeland Security Michael Chertoff highlights the importance of ‘lessons learnt’ and informed anticipation. Copyright © 2010 John Wiley & Sons, Ltd.

Microstructures of epitaxial La0.7Ca0.3MnO3 thin films grown on SrTiO3 and NdGaO3 substrates

“…The precipitate column has a width of about 10 nm. The morphology of the boundaries between the [4][5][6]. In addition, many weak spots, as marked by arrowheads, are also seen in the patterns.…”

“…In recent years, these materials have regained great interest for research due to their particular microstructure, magnetic and electronic properties [3][4][5][6][7][8]. Colossal magnetoresistance (CMR) was found to be caused by the magnetic-field-driven shift of a first-order metal-insulator transition in the temperature window around the ferromagnetic ordering of the Mn charges and spins.…”

Anomalous nanoclusters, anisotropy, and electronic nematicity in the doped manganite La1/3Ca2/3Mn

“…Given the fact that the crystalline symmetry of La 1/3 Ca 2/3 MnO 3 is already changed from cubic to orthorhombic at 1100 K [24], it is important to identify the origin of the anisotropy, i.e.…”

Domain structures and superdislocations of La0.7Ca0.3MnO3 thin films grown on SrTiO3 substrates

“…The colossal magnetoresistance (CMR) manganite materials La 1-x Ca x MnO 3 , especially their thin films, have been extensively explored in recent years [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] because of their exciting potential practical applications and their interesting fundamental physics.…”

“…Although there have many reports from domain-structure investigations in LCMO bulk and thin films [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] , superdislocations are seldom mentioned, and to our knowledge, were only observed in ordered alloys. 22 In this work, by means of using Bragg-diffraction contrast and high-resolution transmission electron microscopy, we investigated in detail the domains and dislocations of LCMO thin films deposited by pulsed laser on SrTiO 3 substrates.…”