Interface effects on perpendicular magnetic anisotropy for molecular-capped cobalt ultrathin films

Abstract

The perpendicular magnetic anisotropy (PMA) of cobalt (0.5-1.8 nm) films capped separately by pentacene (Pc), fullerene (C60), and 8-hydroxyquinoline-aluminum (Alq3) are investigated. For all three series, the thickness of Co is around 0.7 nm for maximum out-of-plane coercivity. It is found that the coercivity of C60-capped films is nearly equal to that for Alq3-capped samples, although both are smaller than for Pc-capped films. The different interface effects of Co/molecules are discussed to explain this observation. This work highlights the PMA of ferromagnetic metal, which can be markedly infected depending on the nature of organic molecule.

Magnetically correlated anisotropic resistive switching manipulated by electric field in Co/PMN-PT heterostructures

“…In order to further investigate the interplay between the magnetization rotation and ) should be considered, which is usually as large as the saturation field for MHA [57,58]. According to thermodynamic polar plots for free energy density in Fig.…”

Spin Transport in Magnetic Tunnel Junctions with the Insertion of [6]Cyclo-2,7-naphthylenes Organic Semiconductor

“…One issues is highly efficient spin-injection into the organic semiconducting layer [1][2], which is an important step to develop the spin-organic-light emission diode (spin-OLED) and flexible magnetic sensor [3][4]. Another issue is related to an organic/magnetic interface [4][5][6][7]. The  electron orbitals for an organic molecule can hybridize with d electron orbital for magnetic element, and this -d hybridization enhances spin polarization [8], which could open new route to develop a devices showing a large magnetoresistance for applications, such as magnetic sensors.…”

“…In this study we investigate the spin-dependent transport property of magnetic junctions including [6]cyclo-2,7naphthylenes (CNAP) [9]. An illustration of molecular structure of CNAP is shown in Fig.…”

Energy level alignment and interactive spin polarization at organic/ferromagnetic metal interfaces for organic spintronics

“…On the other hand, the magnetic property of the FM is also influenced by the contacting OSC. 21,[23][24][25] This reactive modification effect of organic molecules on the magnetic property of FM metals is likely to play a significant role in the property of organic spin valve device as well. Therefore, the design and study of spinterfaces should take all of these points into consideration simultaneously, i.e., the energy level alignment, possible spin-polarization of the interface OSC and possible modification of the interface FM magnetic properties.…”