Use of magnetoplumbite and spinel ferrite seed layers for the growth of oriented Y ferrite thin films

Uhrecký, Róbert; Buršík, J.; Soroka, Miroslav; Kužel, R.; Prokleška, Ján

doi:10.1016/j.tsf.2016.11.049

Cited by 5 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this case is quite the opposite. Two different theories for the enhancement of M s in core/shell nanocrystals system were proposed: one is the mismatch on the chemical composition, and the other is the mismatch on the lattice structure between different phases . Our results suggest another possible conclusion that lattice mismatch holds more leverage in optimizing the magnetic properties of heteroepitaxial core–shell nanocrystals.…”

mentioning

confidence: 69%

Modulation of Magnetic Exchange Coupling via Constructing Bi- or Multimagnetic Heterointerfaces

Chai

Lou

et al. 2022

J. Phys. Chem. Lett.

View full text Add to dashboard Cite

How to resolve contradictions between the nanoscale size and high saturation magnetization (M s) remains one of the scientific challenges in nanoscale magnetism as the theoretical optimal M s of nanocrystals is compromised by the surface spin disorder. Here, we proposed a novel nanotechnology solution, heterointerface constructions of exchange-coupling core–shell nanocrystals, to rearrange the surface spin for the enhancement of M s of nanomagnetic materials. As a demonstration of this principle, single-interface coupling FePt@Fe3‑δO4 core/shell nanocrystals and multi-interface coupling FePt@Fe3‑δO4@MFe2O4 (M = Mn or Co) core/shell/shell nanocrystals were synthesized. The simulated and experimental results demonstrated that constructing coupling heterointerfaces orientates the overall magnetic moment, ultimately enhancing the M s of nanomagnetic materials. Moreover, this work first demonstrated that the origin of coupling heterointerfaces arose from mismatched lattices rather than chemical composition mismatch at the core–shell interfaces, thus providing both a solution to unite different mechanisms and an explanation to explain the exchange coupling at heterointerfaces.

show abstract

mentioning

confidence: 69%

Modulation of Magnetic Exchange Coupling via Constructing Bi- or Multimagnetic Heterointerfaces

Chai

Lou

et al. 2022

J. Phys. Chem. Lett.

View full text Add to dashboard Cite

show abstract

“…Only by using spinel structured buffer materials, namely CoCr2O4, CuMn2O4, FeGa2O4 and NiMn2O4, highly crystalline ferrite films with bulk magnetization properties could be produced. Uhrecky et al, successfully achieved the growth of Ba2Zn2Fe12O22(Y) ferrite using a chemical solution deposition method [187], while Lüders et al, reported on the epitaxial growth of spinel NiFe2O4 ultra-thin films [188] showing an enhanced magnetic moment and a metallic character in comparison to the bulk material. In 2014, Coll et al, produced ultra-smooth and pure magnetic Co2FeO4 thin films with a thickness of 5-25 nm using ALD (Figure 4d,e) [189].…”

Section: Spinelsmentioning

confidence: 99%

Oxidic 2D Materials

Dubnack

Müller

2021

Materials

View full text Add to dashboard Cite

The possibility of producing stable thin films, only a few atomic layers thick, from a variety of materials beyond graphene has led to two-dimensional (2D) materials being studied intensively in recent years. By reducing the layer thickness and approaching the crystallographic monolayer limit, a variety of unexpected and technologically relevant property phenomena were observed, which also depend on the subsequent arrangement and possible combination of individual layers to form heterostructures. These properties can be specifically used for the development of multifunctional devices, meeting the requirements of the advancing miniaturization of modern manufacturing technologies and the associated need to stabilize physical states even below critical layer thicknesses of conventional materials in the fields of electronics, magnetism and energy conversion. Differences in the structure of potential two-dimensional materials result in decisive influences on possible growth methods and possibilities for subsequent transfer of the thin films. In this review, we focus on recent advances in the rapidly growing field of two-dimensional materials, highlighting those with oxidic crystal structure like perovskites, garnets and spinels. In addition to a selection of well-established growth techniques and approaches for thin film transfer, we evaluate in detail their application potential as free-standing monolayers, bilayers and multilayers in a wide range of advanced technological applications. Finally, we provide suggestions for future developments of this promising research field in consideration of current challenges regarding scalability and structural stability of ultra-thin films.

show abstract

“…According to x-ray diffraction and scanning electron microscopy (SEM) analysis, the randomly oriented films exhibited an inhomogeneous microstructure and a spurious spinel phase. Unsurprisingly, the synthesis of phase-pure and well-oriented thin films of hexaferrite remains a challenge [20,21]. The reasons for this difficulty lie in the chemical and structural complexity of W-type compounds and in the generally high temperatures needed for their crystallization (typically above 1473 K [1]).…”

Section: Introductionmentioning

confidence: 99%

Characterization of W-type hexaferrite thin films prepared by chemical solution deposition

et al. 2021

Self Cite

View full text Add to dashboard Cite

Use of magnetoplumbite and spinel ferrite seed layers for the growth of oriented Y ferrite thin films

Cited by 5 publications

References 20 publications

Modulation of Magnetic Exchange Coupling via Constructing Bi- or Multimagnetic Heterointerfaces

Modulation of Magnetic Exchange Coupling via Constructing Bi- or Multimagnetic Heterointerfaces

Oxidic 2D Materials

Characterization of W-type hexaferrite thin films prepared by chemical solution deposition

Contact Info

Product

Resources

About