Observation of electric polarization reversal and magnetodielectric effect in orthochromites: A comparison betweenLuCrO3andErCrO3

CrO4 distortion-driven ferroelectric order in (R,Y)CrO4(<

“…Another significant observation is that the FE T C s are much higher than the magnetic ordering temperatures for all the RCrO 4 series. This is also analogous to that described in few members of RCrO 3 series, where onsets of the FE orders were observed above the magnetic ordering temperatures for R = Sm, Gd, Ho, and Lu [51,52,66,67]. The structural transition to a noncentrosymmetric structure of P na2 1 from the centrosymmetric P bnm structure was found to be associated with the polar order.…”

Local inhomogeneous state in multiferroic SmCrO3

“…In fact, ferroelectricity in RCrO 3 (R = Ho-Lu and Y) has not yet been demonstrated in contrast to the La 1−x Bi x CrO 3 system where ferroelectric hysteresis loops were observed 36 . Furthermore, Lebedev et al reported that both LuCrO 3 and ErCrO 3 show the presence of ferroelectric-like properties, with the latter having a much stronger magneto-dielectric effect, as expected, due to the different R-site cation and its distinct magnetic properties 1 . In SmCrO 3 , a member of the RCrO 3 series, the easy magnetic axis and the origin of ferroelectric and magnetoelectric effects are still under debate.…”

“…R = Yb, Er, Y, Lu and Sm) exhibit a rich variety of physical properties, making them a fruitful playground for both fundamental materials physics and applied related studies. Unique attributes such as magnetisation reversal (or negative magnetisation) phenomena, exchange bias and magnetisation switching were recently observed in orthochromites [1][2][3][4][5][6][7][8] . The different ferroic orders that these multiferroic perovskite-like materials may exhibit, such as ferromagnetism, ferroelectricity, and/or ferroelasticity, further contribute to their scientific relevance [9][10][11] .…”

Spin reorientation and metamagnetic transitions in RFe0.5Cr0.5O3Bolletta1, Pomiro2, Sánchez3 et al. 2018Phys. Rev. BSelf Cite5312352View full textAdd to dashboardCite

“…Various other striking properties have been observed in related orthochromites and orthoferrites including magnetocaloric effects [9][10][11][12], magnetization reversal [13,14], negative thermal expansion [14], and diverse magnetoelectric effects [11,[15][16][17]. All these properties are highly dependent on magnetic interactions between the involved cations [18]. Another interesting observation is the appearance of ferroelectricity in connection with the weak ferromagnetism of the transition metal sublattice, since polarization disappears when the perovskites undergo a SR transition onto a magnetic structure with no canting [19][20][21][22].…”