Hysteresis loops and dielectric properties of compositionally graded (Ba,Sr)TiO 3 thin films described by the transverse Ising model

Enhanced Piezoresponse and Dielectric Properties for Ba1-XSrXTiO3 Composition Ultrathin Films by the High-Throughput Method

“…In our case, Sr content led to the distortions of TiO 6 octahedral caused by the instability of Ti 4+ , and the distortions of TiO 6 octahedral led to the lower-symmetry structure, which is possibly due to the coexistence of tetragonal-like and orthorhombic-like phase structures, such as at the morphotropic phase boundary-enhanced piezoelectric response. Although BSTO composition thin films have been intensively investigated in terms of ferroelectric and dielectric properties, their piezoelectric characteristics were only theoretically studied [37].…”

How to Model an Ising Ferroelectric System: Case of the Investigation of the Dielectrics Properties of a Nano-Octahedral Ferroelectric System

“…[40] observe the same behavior with the ferroelectrics cubic nanowires. And the authors [40] applied their investigation in the (Ba, Sr) TiO 3 thin films [41]. One can explain this phenomenon by the fact that for a weak temperature, the spins don't fluctuate any more between the two equiprobable orientations of the weak polarization axis.…”

Fabrication and Crystal Structure of Sol-Gel Deposited BST Thin Films with Compositional Gradient

“…However, as it results from numerical studies [e.g. 8,16], there is a very wide spectrum of electronic, electrical, and Results of the structural analysis and refinement of elementary cell parameters for BST765 thin film deposited on stainless steel. Bottom plot shows the difference between the experimental and calculated patterns dielectric properties that can be expected from compositionally graded heterostructures.…”

“…Therefore, it is difficult to devise a straightforward approach to correlate the dielectric response to a particular set of interrelated material parameters and boundary conditions such as layer thickness, top/bottom electrode asymmetry and extrinsic effects. Compositional variations in ferroelectrics generate strong internal long-range (volumetric) electric fields which are responsible for unique hysteresis response and dielectric, piezoelectric, and pyroelectric properties [7,8]. Such interactions, can be quite complex as the system minimizes the total free energy via making adjustments to polarization in the presence of coupled tensorial property coefficients of various ranks [16].…”

“…Because of high relative dielectric constant, low dielectric loss, high dielectric breakdown strength, high pyroelectric coefficient and good dielectric tunability, BST seems to be the material of choice for application in microelectronic devices such as high-density dynamic random access memories, pyroelectric infrared, detector and microwave devices [7,8].…”