Structural and magnetic properties of copper oxide films deposited by DC magnetron reactive sputtering

Radjehi, Lamia; Djelloul, A.; Bououdina, M.; Siab, R.; Tebib, W.

doi:10.1007/s00339-018-2141-0

Cited by 17 publications

(3 citation statements)

References 24 publications

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“…The Cu 4 O 3 and Cu 2 O phases differ from each other in the stoichiometric ratio. The reduction of Cu 4 O 3 to Cu 2 O is governed by the endothermic reaction [13]: Thus, energy from a vacuum annealing is needed to convert the Cu 4 O 3 into Cu 2 O.…”

Section: Resultsmentioning

confidence: 99%

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Effect of vacuum annealing on the structural and optical properties of sputtered Cu₄O₃thin films

Radjehi

Aissani

Djelloul

et al. 2020

Surface Engineering

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Cu 4 O 3 thins films were deposited by the reactive magnetron sputtering process on glass and Si (100) wafers. In order to investigate the thermal stability of the Cu 4 O 3 phase, the films were subjected to vacuum annealing treatment for one hour at various temperatures ranging from 200°C to 500°C. The samples were characterized by using EDS, XRD, SEM and UV-VIS. The phase transformation of Cu 4 O 3 into Cu 2 O was obtained from 300°C (critical temperature). Increasing annealing temperature leads to compact morphology and the grain shape changing from elongated towards spherical. Due to this annealing the film structure presentes coexistence of a Cu 4 O 3 and Cu 2 O mixture where O atoms are lost in the Cu-O system. The UV-VIS analysis reveals a gradual increase in the transmittances from 55 to 70% with the increasing annealing temperature, while the band gap shows a maximum value (Eg = 2 eV) at 500°C corresponding to the Cu 2 O phase.

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Section: Resultsmentioning

confidence: 99%

“…The Cu 4 O 3 and Cu 2 O phases differ from each other in the stoichiometric ratio. The reduction of Cu 4 O 3 to Cu 2 O is governed by the endothermic reaction [13]:…”

Section: Structure and Chemical Compositionmentioning

confidence: 99%

Effect of vacuum annealing on the structural and optical properties of sputtered Cu₄O₃thin films

Radjehi

Aissani

Djelloul

et al. 2020

Surface Engineering

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“…TiN x layers can form an effective interdiffusion barrier [20,21,22,23]. Using air as reactive sputtering gas as is commonly done for Ni layers [24] could lead to ferromagnetic clusters caused by copper oxides [25]. We consequently investigated the effects of a pure nitrogen admixture on the microstructure of the Ti layers by using XRD on samples with a nominal thickness of 300 nm deposited on float glass.…”

Section: Effects Of Impurities On Single-and Multilayersmentioning

confidence: 99%

A non-depolarizing CuTi neutron supermirror guide for PERC

Hollering,

Rebrova,

Klauser

et al. 2021

Preprint

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Neutron guides are used to transport slow neutrons from sources to experiments. Conventional neutron supermirror guides use alternating thin layers based on nickel and titanium. Due to the magnetic properties of nickel, their neutron reflection properties are spin-dependent, in particular when exposed to high magnetic fields. Motivated by the requirements of precision experiments on neutron beta decay, we present novel supermirrors based on copper and titanium, which preserve the neutron beam polarization. These show excellent reflectivity and prove to be very stable even when exposed to high temperatures.

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(Zn + Co) co-doped CdO thin films with improved figure of merit values and ferromagnetic orderings with low squareness ratio well suited for optoelectronic devices and soft magnetic materials applications

et al. 2020

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Structural and magnetic properties of copper oxide films deposited by DC magnetron reactive sputtering

Cited by 17 publications

References 24 publications

Effect of vacuum annealing on the structural and optical properties of sputtered Cu₄O₃thin films

Effect of vacuum annealing on the structural and optical properties of sputtered Cu₄O₃thin films

A non-depolarizing CuTi neutron supermirror guide for PERC

(Zn + Co) co-doped CdO thin films with improved figure of merit values and ferromagnetic orderings with low squareness ratio well suited for optoelectronic devices and soft magnetic materials applications

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Structural and magnetic properties of copper oxide films deposited by DC magnetron reactive sputtering

Cited by 17 publications

References 24 publications

Effect of vacuum annealing on the structural and optical properties of sputtered Cu4O3thin films

Effect of vacuum annealing on the structural and optical properties of sputtered Cu4O3thin films

A non-depolarizing CuTi neutron supermirror guide for PERC

(Zn + Co) co-doped CdO thin films with improved figure of merit values and ferromagnetic orderings with low squareness ratio well suited for optoelectronic devices and soft magnetic materials applications

Contact Info

Product

Resources

About

Effect of vacuum annealing on the structural and optical properties of sputtered Cu₄O₃thin films

Effect of vacuum annealing on the structural and optical properties of sputtered Cu₄O₃thin films