Tunable physical properties in Bi-based layered supercell multiferroics embedded with Au nanoparticles

Abstract

Multiferroic materials present as an interesting functional material family combining two ferroic orderings, e.g., ferroelectric and ferromagnetic orderings, or ferroelectric and antiferromagnetic orderings, and find various device applications, such as...

Epitaxial Growth of Aurivillius Bi3Fe2Mn2Ox Supercell Thin Films on Silicon

“…The BFMO SC has not been used in device fabrication in previous work. This demonstration of FeFET devices using the BFMO SC on Si opens potential for other layered multiferroic oxides, e.g., BiAlMnO − and BiMoMnO, in practical device applications. Future work on integrating these new layered oxides and other multiferroic oxides on Si will be necessary for such device demonstrations.…”

Improved epitaxial growth and multiferroic properties of Bi3Fe2Mn2Ox using CeO2 re-seeding layers

“…This CeO 2 re-seeding approach can also be used in other SC systems, such as the BAMO and BNMO Aurivillius phases, which have similar structures to the BFMO system. 21,23 Another potential application for this technique is the combination of multiple Aurivillius phases using CeO 2 interlayers. A preliminary demonstration is shown in the XRD data in Fig.…”

“…[1][2][3][4] Despite their potential uses in memories 5,6 and spintronic devices, 7 single phase multiferroic materials are scarce due to conicting requirements of ferromagnetism (partially lled d-orbitals) and ferroelectricity (empty d-orbitals). 8 Beside the well-studied single phase multiferroic materials, such as BiFeO 3 (BFO) 9 and BiMnO 3 (BMO), 10 a new group of Bismuth-based complex oxides, including Bi 3 Fe 2 Mn 2 O x (BFMO), [11][12][13][14][15][16][17][18] Bi 2 AlMnO 6 (BAMO), [19][20][21] Bi 2 MoO 6 , 22 and Bi 2 NiMnO 6 (BNMO), 23 have shown interesting multifunctionalities, attracting attention and becoming the topic of many recent studies. Making this group of materials interesting is the growth of a unique anisotropic layered Aurivillius supercell (SC) phase and the resulting highly anisotropic properties.…”

Controlled Growth of Vertically Aligned Nanocomposites through a Au Seeding-Assisted Method

“…Self-assembled metal-oxide nanocomposites have generated tremendous research interest due to their fascinating functionalities and potential applications in the fields of energy harvesting devices, catalysis, magnetic data storage, and optical metamaterials. − Among them, vertically aligned nanocomposites (VAN) with metal nanopillars embedded in an oxide matrix have attracted much attention because of their vertical strain coupling, strong structural and property anisotropy, enabling the epitaxial growth of large mismatched systems, and versatile material combinations coupling spin, charge, lattice, and orbital degrees of freedom. , However, due to the limited understanding of the growth kinetics in the self-assembly VAN growth process, controlling the morphology of the formed nanopillars by simply tuning the deposition parameters is usually difficult. Very uniform pillar distribution and density tuning have been demonstrated in multiple VAN systems, but with limited success in achieving ordering and morphology control of nanopillars. − Lu et al demonstrated initial success in in-plane long-range ordering in the La 0.7 Sr 0.3 MnO 3 -Au system on annealed SrTiO 3 (STO) substrates with well-controlled terraces for nucleation .…”