Substrate Surface Engineering for Functional Ceramic Thin Film Growth

Habermeier, H.‐U.

doi:10.1007/s10832-004-5070-6

Cited by 8 publications

(5 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4 In turn, the existence of well oriented steps at the vicinal STO(100) substrate breaks the symmetry of the LSMO(100) film, in principle isotropic in-plane strained, resulting in step-induced uniaxial magnetic anisotropy. 24 On the other hand, larger anisotropy fields are expected for the films with larger surface roughness, as found for the LSMO film grown on the nominally flat STO(110) substrates.…”

Section: Magnetic Propertiesmentioning

confidence: 76%

See 1 more Smart Citation

Tailoring magnetic anisotropy in epitaxial half metallic La0.7Sr0.3MnO3 thin films

Perna

Rodrigo

Jiménez

et al. 2011

Journal of Applied Physics

View full text Add to dashboard Cite

We present a detailed study on the magnetic properties, including anisotropy, reversal fields, and magnetization reversal processes, of well characterized half-metallic epitaxial La 0.7 Sr 0.3 MnO 3 (LSMO) thin films grown onto SrTiO 3 (STO) substrates with three different surface orientations, i.e., (001), (110), and (118). The latter shows step edges oriented parallel to the [110] (in-plane) crystallographic direction. Room temperature high resolution vectorial Kerr magnetometry measurements have been performed at different applied magnetic field directions in the whole angular range. In general, the magnetic properties of the LSMO films can be interpreted with just the uniaxial term, with the anisotropy axis given by the film morphology, whereas the strength of this anisotropy depends on both structure and film thickness. In particular, LSMO films grown on nominally flat (110)-oriented STO substrates presents a well defined uniaxial anisotropy originated from the existence of elongated in-plane [001]-oriented structures, whereas LSMO films grown on nominally flat (001)-oriented STO substrates show a weak uniaxial magnetic anisotropy, with the easy axis direction aligned parallel to residual substrate step edges. Elongated structures are also found for LSMO films grown on vicinal STO(001) substrates. These films present a well-defined uniaxial magnetic anisotropy, with the easy axis lying along the step edges, and its strength increases with the LSMO thickness. It is remarkable that this step-induced uniaxial anisotropy has been found for LSMO films up to 120 nm thickness. Our results are promising for engineering novel half-metallic magnetic devices that exploit tailored magnetic anisotropy.

show abstract

Section: Magnetic Propertiesmentioning

confidence: 76%

“…4 Another possibility to induce in-plane magnetic anisotropy is to create artificially periodic stepped surface by exploiting vicinal substrates. 24 These substrates are intentionally misoriented to a (near) low index surface.…”

Section: Introductionmentioning

confidence: 99%

Tailoring magnetic anisotropy in epitaxial half metallic La0.7Sr0.3MnO3 thin films

Perna

Rodrigo

Jiménez

et al. 2011

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…In Table 1 some of the most frequently used substrates and their properties are listed. Substrates are much more than merely a chemically inert mechanical support for thin films; they are functional elements in thin film technology [42]. On the one side, they can be prepared as chemically well terminated atomically flat surfaces at microscopic dimensions [43,44] on the other, intentional surface miscut and subsequent recrystallization (vicinal cut substrates) enables a nanoscale tailoring of step and terrace structures of the surface [45].…”

Section: Substrate Requirements and Opportunitiesmentioning

confidence: 99%

Science and technology of cuprate-based high temperature superconductor thin films, heterostructures and superlattices—the first 30 years (Review Article)

Habermeier

2016

Low Temperature Physics

Self Cite

View full text Add to dashboard Cite

Science and technology of cuprate-based high temperature superconductor thin films, heterostructures and superlattices -the first 30 years (Review Article) H.-U. Habermeier Science Consulting International, Niersteinerstr, 28, Stuttgart D 70499, Germany Max-Planck-Institute for Solid State Research, Heisenbergstr, 1, Stuttgart D 70569, Germany E-mail: huh@fkf.mpg.de Received May 30, 2016, published online August 25, 2016 During the three decades after the discovery of superconductivity at high temperatures in copper oxides, intense research activities generated a tremendous progress in both, mastering the scientific challenges underpinning the understanding of the properties of these chemically and structurally complex materials as well as achieving a mature technology in preparing single phase bulk specimens -including single crystals -and epitaxially grown single crystalline thin films. This review covers in addition to more basic physics oriented developments mainly technological aspects of complex oxide thin film deposition as an enabling technology to explore the physics of these materials. It consists of two parts: after a brief introduction to the materials development prior to the discovery of superconducting copper oxides, a description of the relevant properties of copper oxide superconductors with focus on YBa 2 Cu 3 O 7-δ is given, followed by the coverage of essentials of complex oxide thin film deposition technology with the copper oxides at its core. Here, the major physical vapor deposition technologies (evaporation and oxide molecular beam technology, sputtering and pulsed laser deposition) are described followed by an overview of substrate requirements to deposit high quality thin films. Opportunities by choosing special substrates with unique properties far beyond the usual mechanical support for a film are introduced with examples aside from usual lattice mismatch induced strain effects. One is the continuous modification of the strain state by poling ferroelectric oxide substrates linked to a piezoelectric effect, the other is the nanoscale tailoring of substrate step-and-terrace structures resulting in a controllable generation of planar defects in complex oxides, thus contributing to the physics of flux-line pinning in cuprate superconductors. In the second part of this review, first some highlights of single layer thin film research are given such as to tailor thin film orientation, generating well defined antiphase boundaries in YBa 2 Cu 3 O 7-δ thin films as flux-line pinning centers as well as contributions to understand fluctuation conductivity in relation to the pseudogap state. In the last section new developments in high T c cuprate based heterostructures and superlattices are reviewed with a special focus on the opportunities offered by interface-induced electronic interactions.

show abstract

“…In table 1 some of the most frequently used substrates and their properties are listed. Substrates, however, are much more than merely a chemically inert mechanical support for thin films; they are functional elements in thin film technology [13]. On the one side, they can be prepared as chemically well-terminated atomically flat surfaces at microscopic dimensions [14,15]; on the other side, intentional surface miscut and subsequent recrystallization (vicinal cut substrates) enables a nanoscale tailoring of step and terrace structures of the surface [16].…”

Section: Substrate Requirementsmentioning

confidence: 99%

Strategies towards controlling strain-induced mesoscopic phase separation in manganite thin films

Habermeier¹

2008

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Complex oxides represent a class of materials with a plethora of fascinating intrinsic physical functionalities. The intriguing interplay of charge, spin and orbital ordering in these systems superimposed by lattice effects opens a scientifically rewarding playground for both fundamental as well as application oriented research. The existence of nanoscale electronic phase separation in correlated complex oxides is one of the areas in this field whose impact on the current understanding of their physics and potential applications is not yet clear. In this paper this issue is treated from the point of view of complex oxide thin film technology. Commenting on aspects of complex oxide thin film growth gives an insight into the complexity of a reliable thin film technology for these materials. Exploring fundamentals of interfacial strain generation and strain accommodation paves the way to intentionally manipulate thin film properties. Furthermore, examples are given for an extrinsic continuous tuning of intrinsic electronic inhomogeneities in perovskite-type complex oxide thin films.

show abstract

Substrate Surface Engineering for Functional Ceramic Thin Film Growth

Cited by 8 publications

References 13 publications

Tailoring magnetic anisotropy in epitaxial half metallic La0.7Sr0.3MnO3 thin films

Tailoring magnetic anisotropy in epitaxial half metallic La0.7Sr0.3MnO3 thin films

Science and technology of cuprate-based high temperature superconductor thin films, heterostructures and superlattices—the first 30 years (Review Article)

Strategies towards controlling strain-induced mesoscopic phase separation in manganite thin films

Contact Info

Product

Resources

About