Epitaxial growth of NiTiO3 with a distorted ilmenite structure

Varga, Tamás; Droubay, Timothy C.; Bowden, Mark E.; Nachimuthu, Ponnusamy; Shutthanandan, V.; Bolin, Trudy; Shelton, W. A.; Chambers, Scott A.

doi:10.1016/j.tsf.2012.04.060

Cited by 26 publications

(24 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…M 2+ Ti IV O 3 titanates with ilmenite structure (M = Mg 2+ or transition divalent metals such as Co, Fe, Mn, Ni, Cu and Zn) have been profusely investigated as functional materials showing a wide variety of electrical, magnetic, optical, gas-sensing and even catalytic properties [22][23][24][25][26][27][28][29][30][31][32][33]. For instance, Ni titanates (NiTiO 3 ) have been used for many advanced applications, such as high-k dielectrics, antiferromagnetic or multiferroic materials, photocatalysts for organic dyes, solid lubricants, and so on [25,[30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and coloring performance of Ni-geikielite (Ni,Mg)TiO3 yellow pigments: Effect of temperature, Ni-doping and synthesis method

Llusar

García

Garcı́a

et al. 2015

Journal of the European Ceramic Society

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Synthesis and coloring performance of Ni-geikielite (Ni,Mg)TiO3 yellow pigments: Effect of temperature, Ni-doping and synthesis method

Llusar

García

Garcı́a

et al. 2015

Journal of the European Ceramic Society

View full text Add to dashboard Cite

“…Thus far, successful preparation of bulk single crystals or epitaxial films with the desired structure (space group R3c) of these materials has proven elusive. Recent efforts at EMSL and PNNL, involving a combination of molecular science computing and thin film deposition, have resulted in the stabilization of NiTiO 3 in the predicted 5.20 multiferroic structure (Varga et al 2012), and work is underway to pin down the theory-predicted ferromagnetic and ferroelectric properties. Given the subtle structural differences between the thermodynamically stable non-multiferroic ilmenite structure of MTiO 3 and the metastable multiferroic R3c phase, x-ray probes, including high-resolution x-ray diffraction and XPS, and non-x-ray probes available at PNNL are needed to discern the structures, unravel atomic-scale structure, and determine bond distances.…”

Section: Novel Materials-multiferroicsmentioning

confidence: 99%

“…Given the subtle structural differences between the thermodynamically stable non-multiferroic ilmenite structure of MTiO 3 and the metastable multiferroic R3c phase, x-ray probes, including high-resolution x-ray diffraction and XPS, and non-x-ray probes available at PNNL are needed to discern the structures, unravel atomic-scale structure, and determine bond distances. Synchrotron diffraction data (APS) has been essential in these studies (Varga et al 2012). Accurate structural characterization is elemental toward understanding the formation of these complex oxide thin films and their physical properties as new variants of these unique materials are prepared.…”

Section: Novel Materials-multiferroicsmentioning

confidence: 99%

Compact X-ray Light Source Workshop Report

Thevuthasan¹,

Evans²,

Terminello³

et al. 2012

View full text Add to dashboard Cite

Executive SummaryThis report is the result of a workshop held in September 2011 that examined the utility of a compact x-ray light source (CXLS) in addressing many scientific challenges critical to advancing energy science and technology. The U.S. Department of Energy (DOE) and National Academy of Sciences (NAS) have repeatedly described the need for advanced instruments that "predict, control, and design the components of energetic processes and environmental balance," most notably in biological, chemical, environmental, and materials science. In numerous DOE and NAS reports, direct molecular-scale imaging and timedependent studies are seen as a powerful means to develop an atomistic-level understanding of scientific issues associated with current and future energy and environmental needs, including energy production and storage from both fossil-based and fossil-free sources and cleanup of government and industrial sites worldwide.One of the major enabling capabilities for meeting these needs is a high-brightness x-ray light source. The DOE report, Next-Generation Photon Sources for Grand Challenges in Science and Energy, identifies "spectroscopic and structural imaging of nano-objects (or nanoscale regions of inhomogeneous materials) with nanometer spatial resolution and ultimate spectral resolution" as one of the two aspects of energy science in which current and next-generation x-ray light sources will have the deepest and broadest impact. The report further stresses the power of direct observation in understanding transformational chemical processes. The report also discusses the importance of molecular "movies" of complex reactions that show bond breaking and reforming in natural time scales, along with the intermediate states to understand the mechanisms that govern chemical transformations. Existing accelerator-based x-ray sources have greatly extended capabilities in the time and space domain for scientific investigations in many disciplines. Despite these successes, a number of scientific challenges would benefit greatly from having an x-ray resource that has much of the attractive capability of these large machines but lends itself to operating in conjunction with other characterization tools in a correlative fashion. Such an integrated multiscale and multimodal approach could fully address the fundamental needs expressed by DOE's Office of Biological and Environmental Research (BER) in regards to understanding how genomic information is translated with confidence to redesign microbes, plants, or ecosystems (http://science.energy.gov/).Fortunately, recent advances in laser and super-cooled linear particle accelerator, or linac, technology have enabled development of a long-promised CXLS that uses inverse Compton scattering for generating x-rays. The new CXLS holds the promise of simultaneous energy tuning-from the soft to hard x-ray regime-as well as a pulsed structure closely coupled to the laser pulse duration of pico-to femtoseconds. With a projected brilliance equal to third-generation light sourc...

show abstract

“…For example, it was shown [13] how a polar distortion -in an antiferromagnetic-paraelectric (AFM-PE) material displaying linear magnetoelectricity -would induce weak-ferromagnetism in the LiNbO 3 structure, e.g., FeTiO 3 [14] or MnSnO 3 [15], and subsequently allow for the electric-field switching of the magnetization by 180…”

Section: Introductionmentioning

confidence: 99%

Linear magnetoelectricity at room temperature in perovskite superlattices by design

2015

View full text Add to dashboard Cite

Discovering materials that display a linear magnetoelectric (ME) effect at room temperature is a challenge. Such materials could facilitate novel devices based on the electric-field control of magnetism. Here we present simple, chemically intuitive design rules to identify a new class of bulk magnetoelectric materials based on the 'bicolor' layering of P bnm ferrite perovskites, e.g., LaFeO3/ LnFeO3 superlattices, Ln = lanthanide cation. We use first-principles density-functional theory calculations to confirm these ideas. We elucidate the origin of this effect and show it is a general consequence of the layering of any bicolor, P bnm perovskite superlattice in which the number of constituent layers are odd (leading to a form of hybrid improper ferroelectricity). Our calculations suggest that the ME effect in these superlattices is larger than that observed in the prototypical magnetoelectric materials Cr2O3 and BiFeO3. Furthermore, in these proposed materials, the strength of the linear ME coupling increases with the magnitude of the induced spontaneous polarization which is controlled by the La/Ln cation radius mismatch. We use a simple mean field model to show that the proposed materials order magnetically above room temperature.

show abstract

Epitaxial growth of NiTiO3 with a distorted ilmenite structure

Cited by 26 publications

References 53 publications

Synthesis and coloring performance of Ni-geikielite (Ni,Mg)TiO3 yellow pigments: Effect of temperature, Ni-doping and synthesis method

Synthesis and coloring performance of Ni-geikielite (Ni,Mg)TiO3 yellow pigments: Effect of temperature, Ni-doping and synthesis method

Compact X-ray Light Source Workshop Report

Linear magnetoelectricity at room temperature in perovskite superlattices by design

Contact Info

Product

Resources

About