Structural, Optical, and Dielectric Studies on Sr-Doped Biferroic YCrO3

A comprehensive review on the ferroelectric orthochromates: Synthesis, property, and application

“…It was noted that no distortion occurred in the crystalline structure of Sr-doped YCrO 3 compounds, i.e., no deformation of CrO 6 octohedra [236]. Tiwari et al synthesized poly-crystalline Y 1−x Sr x CrO 3 (x = 0.0 and 0.1) samples via the solid state reaction method [248]. The materials crystallize into the orthorhombic system with Pbnm space group.…”

“…The materials crystallize into the orthorhombic system with Pbnm space group. The doping with Sr element was believed to be homogenous at Y sites and decreased the dielectric property [248].…”

Magnetoelastic coupling and spin contributions to entropy and thermal transport in biferroic yttrium orthochromite *

“…YCrO 3 is a wide-gap semiconductor with a bandgap of ∼1.8 eV [24]. Thus in the absence of electronic contributions, phonons and magnons can reliably describe the system thermodynamics.…”

“…In general, phonons can be scattered by point-defects, boundaries, other phonons (Umklapp scattering), electrons, and magnons. Since YCrO 3 is a wide-gap semiconductor (E g is ∼1.8 eV [24]), we neglect electron-phonon coupling. If we assume all scattering processes to be independent of each other, following Matthiessen's rule, the total phonon scattering rate of τ −1 is given as,…”

“…Yttrium orthochromite (YCrO 3 ), because of its biferroic properties [19], and extensive characterization using physical/magnetic property measurements [19][20][21][22][23][24][25], is an ideal system to delineate the role of phonons and magnons. YCrO 3 undergoes a FE transition at T FE ∼ 473 K with P ∼ 2 μC cm −2 at 300 K [19], comparable to P ∼ 5 μC cm −2 of the archetypal geometric improper FE YMnO 3 at 300 K [26].…”