Regina Ciancio

AREA Science Park

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Document Type

Co-Authors

P. Orgiani

Istituto Officina dei Materiali

Piu Rajak

Istituto Officina dei Materiali

G. Rossi

University of Milan

Sandeep Kumar Chaluvadi

Istituto Officina dei Materiali

Jun Fujii

AREA Science Park

G. Panaccione

Istituto Officina dei Materiali

A. Vecchione

University of Salerno

I. Vobornik

AREA Science Park

M. Gombos

Istituto Nazionale di Fisica Nucleare, Sezione di Napoli

C. Aruta

University of Rome Tor Vergata

Cooperative Institutions

AREA Science Park

Istituto Officina dei Materiali

Elettra-Sincrotrone Trieste S.C.p.A.

National Research Council

Superconducting and other Innovative Materials and Devices Institute

University of Trieste

University of Salerno

Centre National de la Recherche Scientifique

Istituto Nazionale per la Fisica della Materia

University of Naples Federico II

Author Statistics

Papers

Citation

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On the origin of the improved hydrogen evolution reaction in Mn and Co doped MoS2

Nanoscale (2024)

P. Orgiani Luca Braglia Vincent Polewczyk Zhiwei Nie Francesco Lavini

In the field of hydrogen production, MoS

10.1039/d4nr00876f

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Citations (0)

Evidence of silicide at the Ni/β-Si3N4(0001)/Si(111) interface

Applied Surface Science (2023)

Piu Rajak Regina Ciancio Antonio Caretta Simone Laterza Richa Bhardwaj

We present a study of a sub-nanometre interlayer of crystalline silicon nitride at the Ni/Si interface. We performed transmission electron microscopy measurements complemented by energy dispersive X-ray analysis to investigate to what extent the nitride layer act as a barrier against atom diffusion. The results show that discontinuous silicide areas can form just below the nitride layer, whose composition is compatible with that of the nickel disilicide. The Ni–Si reaction is tentatively attributed to the thermal strain suffered by the interface during the deposition of Ni at low temperature.

10.1016/j.apsusc.2023.156986

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Citations (2)

IMPACT OF OXYGEN VACANCIES ON ELEC-TRONIC PROPERTIES OF ANATASE THIN FILMS

Daniel Knez Goran Dražić Sandeep Kumar Chaluvadi P. Origani Regina Ciancio

Source

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Off-stoichiometry effect on orbital order inA-site manganites probed by x-ray absorption spectroscopy

Physical Review B (2012)

C. Aruta M. Minola Alice Galdi Regina Ciancio A. Yu. Petrov

We here report on the occurrence of strong orbital order driven by off-stoichiometry in oxide manganite films. Multiple-electronic-valence Mn ions are possibly substituted into the perovskite atomic $A$ site (namely, $A$-site manganites). By combining state-of-the-art synchrotron ultrafine spectroscopies, we did provide evidence of a high ferromagnetic metallic state together with a strong orbital order of Mn ions, despite that the kinetic energy of the free charge carriers should prevent long-range orbital order. By varying the total amount of Mn ions at the perovskite $A$ site, a specific orbital order (either in-plane or out-of-plane) can be determined.

Manganite

Stoichiometry

10.1103/physrevb.86.115132

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Citations (10)

Unveiling the Electronic Structure of Pseudotetragonal WO₃ Thin Films

The Journal of Physical Chemistry Letters (2023)

Federico Mazzola Hamideh Hassani D. Amoroso Sandeep Kumar Chaluvadi Jun Fujii

WO3 is a 5d compound that undergoes several structural transitions in its bulk form. Its versatility is well-documented, with a wide range of applications, such as flexopiezoelectricity, electrochromism, gating-induced phase transitions, and its ability to improve the performance of Li-based batteries. The synthesis of WO3 thin films holds promise in stabilizing electronic phases for practical applications. However, despite its potential, the electronic structure of this material remains experimentally unexplored. Furthermore, its thermal instability limits its use in certain technological devices. Here, we employ tensile strain to stabilize WO3 thin films, which we call the pseudotetragonal phase, and investigate its electronic structure using a combination of photoelectron spectroscopy and density functional theory calculations. This study reveals the Fermiology of the system, notably identifying significant energy splittings between different orbital manifolds arising from atomic distortions. These splittings, along with the system's thermal stability, offer a potential avenue for controlling inter- and intraband scattering for electronic applications.

10.1021/acs.jpclett.3c01546

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Citations (1)

Giant magneto–electric coupling in 100 nm thick Co capped by ZnO nanorods

Nanoscale (2017)

Giovanni Vinai B. Ressel Piero Torelli Federico Loi B. Gobaut

Giant strain-driven magnetoelectric coupling of Co/ZnO nanorods. Under ±2 V, the coercivity is reversibly reduced of a factor 5.

Nanorod

Magneto

10.1039/c7nr09233d

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Citations (12)

Chloride-based route for monodisperse Cu2ZnSnS4 nanoparticles preparation

Journal of Renewable and Sustainable Energy (2015)

Cristy Leonor Azanza Ricardo Fabrizio Girardi Elisa Cappelletto Renato D’Angelo Regina Ciancio

A new approach based on hot injection method is proposed to gram-scale Cu2ZnSnS4 nanoparticles production minimizing the use of organic solvents. Nanocrystal synthesis was performed starting from metal chlorides and pure sulphur powder and using Oleylamine as capping agent. As a result, core-shell nanoparticles with a narrow size distribution were obtained.

Oleylamine

Dispersity

10.1063/1.4929959

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Citations (9)

Preparation of unconventional environmentally friendly inorganic binders

Dražan Jozić Sigrid Bernstorff Heinz Amenitsch Cacho Frenando Nerin Regina Ciancio

Environmentally Friendly

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Superconductivity in Sr ₂ RuO ₄ -Sr ₃ Ru ₂ O ₇ eutectic crystals

EPL (Europhysics Letters) (2008)

R. Fittipaldi A. Vecchione Regina Ciancio S. Pace Mario Cuoco

Superconducting behavior has been observed in the Sr2RuO4-Sr3Ru2O7 eutectic system as grown by the flux-feeding floating-zone technique. A supercurrent flows across a single interface between Sr2RuO4 and Sr3Ru2O7 areas at distances that are far beyond those expected in a conventional proximity effect. The current-voltage characteristics within the Sr3Ru2O7 macrodomain, as extracted from the eutectic, exhibit signatures of superconductivity in the bilayered Sr3Ru2O7 region. Detailed microstructural, morphological and compositional analyses address issues on the concentration and the size of Sr2RuO4 inclusions within the Sr3Ru2O7 matrix. We speculate on the possibility of inhomogeneous superconductivity in the eutectic Sr3Ru2O7 and exotic pairing induced by the Sr2RuO4 inclusions.

Supercurrent

10.1209/0295-5075/83/27007

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Citations (27)

Control of composition and grain growth in Cu2ZnSnS4 thin films from nanoparticle inks

Thin Solid Films (2019)

Narges Ataollahi Claudia Malerba Elisa Cappelletto Regina Ciancio Raju Edla

Oleylamine

Kesterite

Wurtzite crystal structure

Nanocrystalline material

10.1016/j.tsf.2019.02.004

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Citations (23)