Transparent ferrimagnetic semiconducting CuCr2O4 thin films by atomic layer deposition

Tripathi, T. S.; Yadav, C. S.; Karppinen, Maarit

doi:10.1063/1.4946884

Cited by 12 publications

(1 citation statement)

References 37 publications

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“…The XRD patterns of the pristine and modified CuCr 2 O 4 nanoparticles have been shown in Figure . In both bare and modified CuCr 2 O 4 patterns, the diffraction peaks at 2 θ = 28.94, 30.43, 34.45, 36.88, 41.58, 55.43, 60.77, and 64.20 were assigned to the (200), (112), (211), (202), (220), (321), (400), and (224) crystal planes, which confirmed that the crystal structure of CuCr 2 O 4 nanoparticles have been fully formed based on the JCPDS [01‐072‐1212] standard cart with tetragonal crystal system . Moreover, alongside beside the prepared CuCr 2 O 4 nanoparticles, both (012) and (104) phases were related to the rhombohedral structure of constructed CrCuO2.…”

Section: Resultsmentioning

confidence: 66%

Preparation and Characterization of Copper Chromium Oxide Nanoparticles Using Modified Sol‐Gel Route and Evaluation of Their Microwave Absorption Properties

Peymanfar

Khodamoradipoor²

2019

Physica Status Solidi (a)

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In this study, simple, broadband, robust, and affordable microwave absorbing nanocomposites are prepared using CuCr2O4 nanoparticles as guests and silicone rubber or poly(vinylidene fluoride) (PVDF) as host. Firstly, the pristine and modified CuCr2O4 nanoparticles are obtained by the conventional citrate gel method in the absence and presence of sucrose as a novel capping agent in the experimental steps. X‐ray powder diffraction (XRD) patterns confirms that the CuCr2O4 nanoparticles are synthesized. Moreover, morphologies, chemical functional groups, and optical properties are studied using field emission scanning electron microscopy (FE‐SEM), Fourier transform infrared (FT‐IR), and diffuse reflection spectroscopy (DRS), respectively. The vibrating sample magnetometer (VSM) analysis reveals weak magnetic properties for the nanoparticles and confirms that the capping agent change the magnetic properties. Finally, bare and modified copper chromium oxide nanoparticles are separately molded with silicone rubber or PVDF to compare dipole and interfacial polarization. Besides, using a vector network analyzer (VNA) along the x and ku‐band frequency, novel organic precursor effects on their microwave absorption properties are examined. According to the obtained results, the maximum reflection loss of the modified CuCr2O4/PVDF is −65.57 dB at 14 GHz with 2 mm thickness and the CuCr2O4/PVDF nanocomposite absorbs a bandwidth of 7.73 GHz more than 10 dB with a thickness of 2 mm. Interestingly, novel one type filler lead to significant microwave absorbing properties as well as organic capping agent reinforced maximum microwave absorption also PVDF improves absorption bandwidth.

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Section: Resultsmentioning

confidence: 66%

Preparation and Characterization of Copper Chromium Oxide Nanoparticles Using Modified Sol‐Gel Route and Evaluation of Their Microwave Absorption Properties

Peymanfar

Khodamoradipoor²

2019

Physica Status Solidi (a)

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Atomic Layer Deposition of p‐Type Semiconducting Thin Films: a Review

Tripathi

Karppinen

2017

Adv Materials Inter

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Semiconductors such as elemental silicon allowing both p-type and n-type doping are the backbone of current microelectronics industry, while the continuous progress in the fabrication techniques has been the key for the ever-increased integration density and device miniaturization. Similarly, in the strongly emerging field of transparent electronics both p-type and n-type compound semiconductors are needed that moreover should be transparent within the entire visible spectral range. Atomic layer deposition (ALD) has been the thin-film deposition method of choice for a number of challenging applications in microelectronics, and it would be highly relevant technology for the transparent electronics as well. Currently the appropriate p-type semiconducting compounds are far outnumbered by the n-type compounds. Hence there is an obvious quest for high-quality thin films of new p-type compound semiconductors. This is clearly seen in the increasing number of annually published ALD papers on p-type semiconducting materials. In this overview our intension is to briefly present the current state of research in the field by (i) summarizing the ALD processes so far developed for the various p-type (transparent) conducting material candidates, and (ii) highlighting the most prominent electrical transport and optical properties achieved for these thin films.

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Raman spectroscopic investigation and thermoelectric studies of defect-induced Mg-doped delafossite thin film

Sanam

Shah

Pradyumnan

2022

J Mater Sci: Mater Electron

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Transparent ferrimagnetic semiconducting CuCr2O4 thin films by atomic layer deposition

Cited by 12 publications

References 37 publications

Preparation and Characterization of Copper Chromium Oxide Nanoparticles Using Modified Sol‐Gel Route and Evaluation of Their Microwave Absorption Properties

Preparation and Characterization of Copper Chromium Oxide Nanoparticles Using Modified Sol‐Gel Route and Evaluation of Their Microwave Absorption Properties

Atomic Layer Deposition of p‐Type Semiconducting Thin Films: a Review

Raman spectroscopic investigation and thermoelectric studies of defect-induced Mg-doped delafossite thin film

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