Magnetodielectric coupling in epitaxial Nd2CoMnO6 thin films with double perovskite structure

Abstract

Structure and properties of epitaxial perovskite Pb(Zr0.52Ti0.48)O3/La0.7Sr0.3MnO3 heterostructures J. Appl. Phys. 111, 07D718 (2012) thin films have been grown epitaxially on SrTiO 3 substrates using pulsed laser deposition and their structural, magnetic, and dielectric properties were investigated. Temperature dependent dielectric (e) constant is measured in the frequency range between 1 kHz and 1 MHz under applied magnetic fields up to 0.5 kOe. The dielectric constant exhibits an anomaly near to the Curie temperature which is independent of magnetic field and can be corroborated with a loop opening temperature in zero-field-cooled and field-cooled magnetization measurements. While, a linear relationship between magnetodielectric constant, de MD , and M 2 (magnetization) in the paramagnetic to ferromagnetic regime proves magnetodielectric coupling between ferroelectric and ferromagnetic orders in this single-phase perovskite system.

Spin reorientation inNdFe0.5Mn0.5O3: Neutron scattering andab initiostudy

“…Besides the observed magnetic behavior is entirely different from that expected from a double perovskite compound which predominantly show ferromagnetism e.g. in R 2 MnBO 6 (R=La,Nd and B=Ni,Co) [33,[41][42][43]. This information indicates the possible phase formation of NFMO with orthorhombic symmetry.…”

Mn2(Fe0.8Mo0.2)MoO6: A Double Perovskite with Multiple Transition Metal Sublattice Magnetic Effects

“…In dual magnetic site ABO 3 perovskites, magnetic ordering of the B-site at a higher temperature, followed by A-site magnetic ordering at a lower temperature, is not uncommon. ,,− Moreover, a complex A/B site magnetic coupling, involving moment competition/frustration/canting, is also a leitmotif in such materials. Understandably, the application of a magnetic field leads to a still more complex interplay of the sites and moment orientations in such multiple-magnetic-sublattice systems.…”

Structural, magnetic and dielectric properties in 3d–5d based Sr2FeIrO6 thin films

“…Double perovskites are, in general, being widely investigated for interesting dielectric behavior due to their high insulating nature [36][37][38]. An exotic magneto-electrical coupling makes these materials suitable for technological applications [39,40]. Interfaces in heterostructures further exhibit many exotic phenomena which mainly arisedue to various effects such as, strain from lattice mismatch, Rashba type SOC effect due to breaking of lattice inversion symmetry, induced potential difference due to electronic charge transfer and/or charge accumulation, oxygen non-stoichiometry, etc [41,42].…”