Lorenzo Malavasi | University of Pavia (original) (raw)

Lorenzo Malavasi

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Papers by Lorenzo Malavasi

Research paper thumbnail of RF-sputtering deposition of gadolinia doped ceria films for IT-SOFCs applications

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Research paper thumbnail of Vibrational spectrum of solid picene (C 22 H 14 )

Journal of Physics: Condensed Matter, 2012

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Research paper thumbnail of Comment on “Precursor Morphology Controlled Formation of Rutile VO 2 Nanorods and Their Self-Assembled Structure”

Chemistry of Materials, 2006

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Research paper thumbnail of Correlation between the local scale structure and the electrochemical properties in lithium orthosilicate cathode materials

J. Mater. Chem. A, 2014

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Research paper thumbnail of High-Pressure Optical Properties and Chemical Stability of Picene

The Journal of Physical Chemistry C, 2013

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Research paper thumbnail of Oxygen content variation and cation doping dependence of (La){sub 1.4}(Sr{sub 1-y}Ca{sub y}){sub 1.6}Mn{sub 2}O{sub 7{+-}}{sub {delta}} (y=0,0.25,0.5) bilayered manganites

Physical Review B, Jul 31, 2006

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Research paper thumbnail of Redox behavior of Ru-doped La1-xNaxMnO3+d manganites

Phys Rev B, 2005

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Research paper thumbnail of Effect of Oxygen Content on the Properties of the HoBaCo2O5+x Layered Cobaltite

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Research paper thumbnail of Preparation of (substituted) picenes via solar light-induced Mallory photocyclization

RSC Adv., 2015

ABSTRACT Picenes 2a-c were readily obtained via photocyclization of dinaphthylethenes 1a-c by a s... more ABSTRACT Picenes 2a-c were readily obtained via photocyclization of dinaphthylethenes 1a-c by a straightforward solar light-induced Mallory reaction. The product was easily recovered by simple filtration after exposure of the reaction mixture to sunlight. Similar results have been The polyene obtained was then characterized by means of Raman spectroscopy and X-ray diffraction.

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Research paper thumbnail of Neutron diffraction and total scattering for the study of solid state ionics materials

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Research paper thumbnail of The Eu1+xBa2-xCu3Oy system: Non-stoichiometry and electrical conductivity at high and low temperature

We present here non-stoichiometry and electrical conductivity measurements in the low-T and high-... more We present here non-stoichiometry and electrical conductivity measurements in the low-T and high-T range for the Eu1+xBa2-xCu3Oy system with x=0, 0.2 and 0.4. We found an anomalous trend of the Tc with y for EuBa2Cu3Oy (Eu-123) relative to other HTSC of REBa2Cu3Oy family (RE=Y, Nd, Sm). On the contrary high-T data for the whole system show a behavior similar to

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Research paper thumbnail of Nanoscale stabilization of the scheelite-type structure in La 0.99 Ca 0.01 NbO 4 thin films

Nanoscale, 2015

In this paper we report on the deposition of La0.99Ca0.01NbO4 thin films with scheelite-type crys... more In this paper we report on the deposition of La0.99Ca0.01NbO4 thin films with scheelite-type crystal structure. Thanks to the film's nanostructure, we were able to stabilize the tetragonal scheelite-type structure phase at room temperature, which involves a full removal of the fergusonite-scheelite phase transition.

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Research paper thumbnail of ChemInform Abstract: Structure-Properties Correlations in Fe Chalcogenide Superconductors

ChemInform, 2012

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Research paper thumbnail of Oxygen Chemical Diffusion Coefficient in Manganite Thin Films by Isothermal Electric Resistivity Measurements

The Journal of Physical Chemistry B, 2003

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Research paper thumbnail of Local Structure and Electronic Properties of the Rhombohedral and Orthorhombic Colossally Magnetoresistive Manganites La 1 - x Na x MnO 3 by Mn−K Edge EXAFS and XANES

The Journal of Physical Chemistry B, 2005

The local structure and electronic properties of Mn in Na doped lanthanum manganites have been in... more The local structure and electronic properties of Mn in Na doped lanthanum manganites have been investigated by means of Mn-K edge XAFS, at various temperatures ranging from RT to 30 K. The hole content depends on the amount of doping, both with Na which injects two holes per doping atom and with oxygen nonstoichiometry. The holes are annihilated by oxygen under-stoichiometry via the formation of oxygen vacancies; the presence of a greater static disorder in the orthorhombic manganites is evidenced by both EXAFS and XANES analysis. In the rombohedral samples, a single Mn-O distance is found. In addition, the trend of the EXAFS Debye-Waller factors for the Mn-O distance can be fitted with a simple Einstein model, with no static disorder at low temperature. This evidence suggests small disorder of polaronic and of Jahn-Teller origin in the rombohedral samples at low temperatures, which is in contrast with what was found for the orthorhombic samples below T(c).

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Research paper thumbnail of Magnetic and X-ray diffraction investigation on Mg1−xMn2+xO4 spinels

Solid State Communications, 2001

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Research paper thumbnail of Magnetic investigation of Mn ions in (Cd1−xMnx)Mn2O4 spinels

Solid State Communications, 2001

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Research paper thumbnail of Oxygen content variation and cation doping dependence of (La)1.4(Sr1−yCay)1.6Mn2O7±δ (y=0,0.25,0.5) bilayered manganites

Physical Review B, 2006

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Research paper thumbnail of Magnetic order and spin dynamics in substituted spinel Mg1−xMn2+xO4

Physica B: Condensed Matter, 2003

ABSTRACT

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Research paper thumbnail of Nature of the Monoclinic to Cubic Phase Transition in the Fast Oxygen Ion Conductor La 2 Mo 2 O 9 (LAMOX)

Journal of the American Chemical Society, 2007

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Research paper thumbnail of RF-sputtering deposition of gadolinia doped ceria films for IT-SOFCs applications

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Research paper thumbnail of Vibrational spectrum of solid picene (C 22 H 14 )

Journal of Physics: Condensed Matter, 2012

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Research paper thumbnail of Comment on “Precursor Morphology Controlled Formation of Rutile VO 2 Nanorods and Their Self-Assembled Structure”

Chemistry of Materials, 2006

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Research paper thumbnail of Correlation between the local scale structure and the electrochemical properties in lithium orthosilicate cathode materials

J. Mater. Chem. A, 2014

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Research paper thumbnail of High-Pressure Optical Properties and Chemical Stability of Picene

The Journal of Physical Chemistry C, 2013

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Research paper thumbnail of Oxygen content variation and cation doping dependence of (La){sub 1.4}(Sr{sub 1-y}Ca{sub y}){sub 1.6}Mn{sub 2}O{sub 7{+-}}{sub {delta}} (y=0,0.25,0.5) bilayered manganites

Physical Review B, Jul 31, 2006

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Research paper thumbnail of Redox behavior of Ru-doped La1-xNaxMnO3+d manganites

Phys Rev B, 2005

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Research paper thumbnail of Effect of Oxygen Content on the Properties of the HoBaCo2O5+x Layered Cobaltite

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Research paper thumbnail of Preparation of (substituted) picenes via solar light-induced Mallory photocyclization

RSC Adv., 2015

ABSTRACT Picenes 2a-c were readily obtained via photocyclization of dinaphthylethenes 1a-c by a s... more ABSTRACT Picenes 2a-c were readily obtained via photocyclization of dinaphthylethenes 1a-c by a straightforward solar light-induced Mallory reaction. The product was easily recovered by simple filtration after exposure of the reaction mixture to sunlight. Similar results have been The polyene obtained was then characterized by means of Raman spectroscopy and X-ray diffraction.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Neutron diffraction and total scattering for the study of solid state ionics materials

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Eu1+xBa2-xCu3Oy system: Non-stoichiometry and electrical conductivity at high and low temperature

We present here non-stoichiometry and electrical conductivity measurements in the low-T and high-... more We present here non-stoichiometry and electrical conductivity measurements in the low-T and high-T range for the Eu1+xBa2-xCu3Oy system with x=0, 0.2 and 0.4. We found an anomalous trend of the Tc with y for EuBa2Cu3Oy (Eu-123) relative to other HTSC of REBa2Cu3Oy family (RE=Y, Nd, Sm). On the contrary high-T data for the whole system show a behavior similar to

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Research paper thumbnail of Nanoscale stabilization of the scheelite-type structure in La 0.99 Ca 0.01 NbO 4 thin films

Nanoscale, 2015

In this paper we report on the deposition of La0.99Ca0.01NbO4 thin films with scheelite-type crys... more In this paper we report on the deposition of La0.99Ca0.01NbO4 thin films with scheelite-type crystal structure. Thanks to the film's nanostructure, we were able to stabilize the tetragonal scheelite-type structure phase at room temperature, which involves a full removal of the fergusonite-scheelite phase transition.

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Research paper thumbnail of ChemInform Abstract: Structure-Properties Correlations in Fe Chalcogenide Superconductors

ChemInform, 2012

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Research paper thumbnail of Oxygen Chemical Diffusion Coefficient in Manganite Thin Films by Isothermal Electric Resistivity Measurements

The Journal of Physical Chemistry B, 2003

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Research paper thumbnail of Local Structure and Electronic Properties of the Rhombohedral and Orthorhombic Colossally Magnetoresistive Manganites La 1 - x Na x MnO 3 by Mn−K Edge EXAFS and XANES

The Journal of Physical Chemistry B, 2005

The local structure and electronic properties of Mn in Na doped lanthanum manganites have been in... more The local structure and electronic properties of Mn in Na doped lanthanum manganites have been investigated by means of Mn-K edge XAFS, at various temperatures ranging from RT to 30 K. The hole content depends on the amount of doping, both with Na which injects two holes per doping atom and with oxygen nonstoichiometry. The holes are annihilated by oxygen under-stoichiometry via the formation of oxygen vacancies; the presence of a greater static disorder in the orthorhombic manganites is evidenced by both EXAFS and XANES analysis. In the rombohedral samples, a single Mn-O distance is found. In addition, the trend of the EXAFS Debye-Waller factors for the Mn-O distance can be fitted with a simple Einstein model, with no static disorder at low temperature. This evidence suggests small disorder of polaronic and of Jahn-Teller origin in the rombohedral samples at low temperatures, which is in contrast with what was found for the orthorhombic samples below T(c).

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Research paper thumbnail of Magnetic and X-ray diffraction investigation on Mg1−xMn2+xO4 spinels

Solid State Communications, 2001

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Research paper thumbnail of Magnetic investigation of Mn ions in (Cd1−xMnx)Mn2O4 spinels

Solid State Communications, 2001

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Research paper thumbnail of Oxygen content variation and cation doping dependence of (La)1.4(Sr1−yCay)1.6Mn2O7±δ (y=0,0.25,0.5) bilayered manganites

Physical Review B, 2006

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Research paper thumbnail of Magnetic order and spin dynamics in substituted spinel Mg1−xMn2+xO4

Physica B: Condensed Matter, 2003

ABSTRACT

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Research paper thumbnail of Nature of the Monoclinic to Cubic Phase Transition in the Fast Oxygen Ion Conductor La 2 Mo 2 O 9 (LAMOX)

Journal of the American Chemical Society, 2007

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