Magnetic Properties of Biaxially Oriented NI-V Substrate

Bettinelli, Daniela; Petrișor, T.; Gambardella, U.; Boffa, V.; Ceresara, S.; Nistor, Liviu; Pop, V.; Scardi, Paolo

doi:10.1142/s0217979299001132

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…The (001)[100] cube texture was induced in Ni 89 V 11 alloy by rolling the Ni-V bar at room temperature followed by recrystallization annealing in vacuum under 10 −6 Torr at 900 • C for 4 h. Detailed information about the preparation and magnetic and mechanical properties of Ni-V substrates is published elsewhere [7,11,12]. Unlike pure Ni, which only under special conditions forms (00l)-oriented NiO [13], it has been observed that, within a large range of oxygen pressure and temperature, the NiO is epitaxially formed on the Ni-V substrates, for vanadium concentrations greater than 7 at%.…”

Section: Methodsmentioning

confidence: 99%

Epitaxial growth of YBa₂Cu₃O_7-δon Ni₈₉V₁₁non-magnetic biaxially textured substrate using NiO as buffer layer

Boffa

Petrișor

Celentano

et al. 2000

Supercond. Sci. Technol.

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The superconducting YBa2Cu3O7-δ/CeO2/NiO multilayer structure was grown in situ by pulsed-laser deposition on biaxially textured Ni89V11 non-magnetic alloy. The role of vanadium is to decrease the Curie temperature of Ni and to favour the formation of oriented NiO. The (00l)NiO buffer layer has been formed by the controlled oxidation of the Ni-V substrate under 10 mTorr oxygen pressure and at 700 °C. The critical current density of 0.6 MA cm-2, at 77 K and zero magnetic field, was obtained for 0.7 µm thick YBa2Cu3O7-δ films.

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Section: Methodsmentioning

confidence: 99%

Epitaxial growth of YBa₂Cu₃O_7-δon Ni₈₉V₁₁non-magnetic biaxially textured substrate using NiO as buffer layer

Boffa

Petrișor

Celentano

et al. 2000

Supercond. Sci. Technol.

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“…The preparation and properties of Ni-V substrate are reported elsewhere [8,9]. Buffer layers were deposited by both pulsed laser deposition (PLD) and electron beam evaporation (e-beam) techniques starting from stoichiometric targets.…”

Section: Methodsmentioning

confidence: 99%

DEVELOPMENT OF BUFFER LAYER STRUCTURES FOR YBa₂Cu₃O_7-δ COATED CONDUCTORS ON TEXTURED Ni-V SUBSTRATE

Mancini

Boffa

Celentano

et al. 2000

Int. J. Mod. Phys. B

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Y2O3 and MgO-based buffer layer architectures on non-magnetic cube textured Ni-V substrates were studied for YBa2Cu30 7 -8 (YBCO) coated conductors fabrication using both pulsed laser deposition and electron beam evaporation. The Y2O3 films exhibited a biaxial texture with cp and co-scans full width at half maximum (FWHM) of about 11° and 7° and a smooth and continuous surface. YBCO thick films deposited on Ce02/Y203/Ni-V and Ce02/Y203/NiO/Ni-V architectures were mainly c-axis oriented showing a TC(R=O) above 85 K. MgO films were grown by electron beam evaporation both directly on metallic substrates and with a Pd intermediate layer. The MgO films grown on Ni-V substrates show a good texture and good surface morphological properties. The MgO deposition on Pd buffered Ni-V substrate leads to films with better structural properties with respect to MgO depositon on bare Ni-V substrate, showing cp and co-scans FWHM up to 8° and 5°, respectively. In spite of the interdiffusion between Pd buffer layer and Ni-V substrate, the MgO films preserve their structural and morphological properties when annealed at typical YBCO deposition temperature.

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“…On the one hand, Ni is one of the few elemental ferromagnets (FM) with a high critical temperature T c = 630 K 6 while on the other hand the magnetism of Ni is very sensitive to changes in the local environment caused by other elements that weaken the magnetic moment and the magnetic order. It is known that T c is easily tuned 7 in Ni 1−x X x by partial chemical substitution of Ni with another d-element X down to very low values. Ni-alloys seem to provide a good opportunity for observing magnetic quantum phase transitions (QPT) by reducing the FM ordering temperature T c down to zero and leaving a paramagnetic phase (PM) without magnetic order.…”

Section: Introductionmentioning

confidence: 99%

Study of atomic disorder in Ni-V alloys

Gebretsadik¹,

Wang²,

Alyami³

et al. 2023

Preprint

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We present a pair distribution function (PDF) analysis from neutron diffraction data of the Ni1−xVx alloy in the Ni-rich regime. Such structural study aims to clarify the origin of the magnetic inhomogeneities associated with the quantum Griffiths phase close to the ferromagneticparamagnetic quantum phase transition. The PDF analysis successfully reveals the details of the structure and chemical distribution of our Ni1−xVx polycrystalline samples prepared with hightemperature annealing and rapid cooling protocol. This study confirms the expectations that all Ni1−xVx samples with 0 ≤ x ≤ 0.15 crystallize in a single phase fcc structure with some residual strain. The increase of the lattice constant and the atomic displacement parameter with Vconcentration x is consistently explained by a random occupation of V and Ni-atoms on the lattice, with a radius ratio (rV/rNi) of 1.05. Probing alternate, simple models of the local PDF, such as V-clusters or ordered structures (Ni8V, Ni3V) give inferior results compared to a random occupation. This investigation strongly supports that the magnetic clusters in the binary alloy Ni1−xVx originate from Ni-rich regions created from random occupation rather than from chemical clusters. It reveals that Ni1−xVx is one of the rare examples of a solid solution in a wide concentration regime (up to x = 0.15) persisting down to low temperatures (T = 15 K).

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Magnetic Properties of Biaxially Oriented NI-V Substrate

Cited by 7 publications

References 3 publications

Epitaxial growth of YBa₂Cu₃O_7-δon Ni₈₉V₁₁non-magnetic biaxially textured substrate using NiO as buffer layer

Epitaxial growth of YBa₂Cu₃O_7-δon Ni₈₉V₁₁non-magnetic biaxially textured substrate using NiO as buffer layer

DEVELOPMENT OF BUFFER LAYER STRUCTURES FOR YBa₂Cu₃O_7-δ COATED CONDUCTORS ON TEXTURED Ni-V SUBSTRATE

Study of atomic disorder in Ni-V alloys

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Magnetic Properties of Biaxially Oriented NI-V Substrate

Cited by 7 publications

References 3 publications

Epitaxial growth of YBa2Cu3O7-δon Ni89V11non-magnetic biaxially textured substrate using NiO as buffer layer

Epitaxial growth of YBa2Cu3O7-δon Ni89V11non-magnetic biaxially textured substrate using NiO as buffer layer

DEVELOPMENT OF BUFFER LAYER STRUCTURES FOR YBa2Cu3O7-δ COATED CONDUCTORS ON TEXTURED Ni-V SUBSTRATE

Study of atomic disorder in Ni-V alloys

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Epitaxial growth of YBa₂Cu₃O_7-δon Ni₈₉V₁₁non-magnetic biaxially textured substrate using NiO as buffer layer

Epitaxial growth of YBa₂Cu₃O_7-δon Ni₈₉V₁₁non-magnetic biaxially textured substrate using NiO as buffer layer

DEVELOPMENT OF BUFFER LAYER STRUCTURES FOR YBa₂Cu₃O_7-δ COATED CONDUCTORS ON TEXTURED Ni-V SUBSTRATE