Tailoring the magnetic and magnetoelectric properties of rare earth orthoferrites for room temperature applications

Abstract

The M(T) curve shows negative magnetization value for samples containing Er ions. The dielectric constant value does not show any anomaly around the magnetic transition temperature. The temperature at which maximum MDE effect observed corresponds to dielectric loss maxima.

Spin reorientation and metamagnetic transitions in RFe0.5Cr0.5O3Bolletta1, Pomiro2, Sánchez3 et al. 2018Phys. Rev. B5312352View 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].…”

“…It is clear that different mixtures of cations add further complexity to the system which can lead to new properties. Furthermore, a deep knowledge of the relevant interactions allows tuning of these properties and the temperature at which they occur by modifying the stoichiometry of the designed compound [17,[23][24][25].…”

Structural phase stabilization via Ba site doping with bivalent Sr, Ca and Zn ions and Fe site doping with trivalent Cr and Ga ions in the BaFe12O19 hexaferrite and its magnetic modification

“…[1][2][3][4] Rare earth (RE)-based ferrites are good candidates for permanent magnets due to their high magnetocrystalline anisotropy, coercivity and magnetic moment, but their magnetic ordering temperature is well below room temperature. 5 RE-free ferrites (spinal ferrites and hexaferrites) are flexible in terms of tuning their magnetic properties from soft to hard magnet types. Magnetic materials with a Curie temperature (T C ) too low or too high are not compatible for room-temperature applications.…”

Heterometallic 3d–4f Complexes as Air-Stable Molecular Precursors in Low Temperature Syntheses of Stoichiometric Rare-Earth Orthoferrite Powders

“…The long-range interactions observed at the domain walls may depend strongly on exchanging the spontaneous electric polarization with an applied magnetic field and vice versa, leading to new exotic multiferroic phenomena . Overall, in the past few years, extensive research has been aimed at producing materials with engineered exchange bias, with large magnetoelectric (ME) coupling, magneto-optical properties, and materials with ultrafast optical control of spins, ,− as well as materials that exhibit multiferroic behavior for these spintronic applications . In addition, magnetic-optical properties are very important in developing new magnetic memory devices, low power consumption spintronics devices and magneto-optical sensors. ,− The ultrafast control of spins in rare-earth orthoferrites also may allow the prospect of spin-based information processing and ultrafast photomagnetic excitation. , …”