Strong uniaxial in-plane magnetic anisotropy of (001)- and (011)-orientedLa0.67Sr0.33MnO3thin films on

Abstract

Epitaxial La 0.67 Sr 0.33 MnO 3 ͑LSMO͒ ferromagnetic thin films were coherently grown on NdGaO 3 ͑NGO͒ substrates with different crystal orientations of the surface plane. On the ͑110͒ o -and ͑001͒ o -oriented substrates, the film grows in the ͑001͒ pc orientation, and on the ͑100͒ o -, ͑010͒ o -, and ͑112͒ o -oriented substrates the film is ͑011͒ pc oriented ͑we will use subindices o and pc for the orthorhombic and pseudocubic crystal structures, respectively͒. The lattice parameters and pseudocube angles of the deformed LSMO pseudocube have been determined from x-ray diffraction measurements. The in-plane magnetic easy and hard directions of these films have been determined from the dependence of the remnant magnetization on the angle of the in-plane applied field. For all substrate orientations there is a strong in-plane uniaxial magnetic anisotropy, determined by the crystal directions of the substrate surface. The easy and hard magnetic-anisotropy directions are explained consistently by the ͑bulk͒ inverse magnetostriction model, except for the film on NGO ͑112͒ o .

Structural control of magnetic anisotropy in a strain-driven multiferroic EuTiO3thin film

“…This feature suggests that the magnetic anisotropy of multiferroic EuTiO 3 film is set via the coupling between the ferroelectric polarization and the ferromagnetic moment, both of which are correlated with the (nonmagnetic) TiO 6 octahedral rotation. This mechanism is distinct from others that account for the magnetic anisotropy reported in manganites by distorting the (magnetic) MnO 6 octahedra, i.e, changing the Mn-O-Mn bonding length/angle directly via epitaxial strain [9,15,17]. Instead, our observation in strained …”

Tunnelling anisotropic magnetoresistance at La0.67Sr0.33MnO3-graphene interfaces

“…1(a), with an SLG channel connecting LSMO electrodes patterned from epitaxial films grown on the (001) surface of orthorhombic NdGaO 3 (NGO). In principle, one could try and align the single magnetic easy axis 29 parallel to [010] NGO across the width of each electrode, in order to achieve coercivity contrast via magnetic shape anisotropy using electrodes of different width. In this case, parallel and antiparallel magnetic configurations could arise in adjacent electrodes while sweeping the magnetic field, such that any measured MR would be due to spin transport.…”

Resonance spin–charge phenomena and mechanism of magnetoresistance anisotropy in manganite/metal bilayer structures

“…The LSMO/SRO bilayer films were epitaxially grown on the same substrate by RF magnetron sputtering [29]. It is known [27,30] (Fig. 1).…”