Tunable Dielectric Properties of Ferrite-Dielectric Based Metamaterial

Bi, Ke; Huang, Kun; Zeng, Lingyu; Zhou, Minhong; Wang, Q. M.; Wang, Y. G.; Lei, Ming

doi:10.1371/journal.pone.0127331

Cited by 8 publications

(8 citation statements)

References 29 publications

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“…Magnesium is another tunable material that can undergo metal-to-dielectric phase-transition to form magnesium hydride (MgH 2 ) by absorbing up to 7.6 wt % hydrogen 280 , which has been used in tunable metamaterials [281][282][283] . Last but not least, ferrites (magnet) materials are used specifically by coupling of the ferrite cuboid with Mie resonance of dielectric materials to magnetically tune the properties of different types of the metamaterials [284][285][286][287][288][289] .…”

Section: Resultsmentioning

confidence: 99%

Tunable and reconfigurable metasurfaces and metadevices

Nemati

Wang

Hong

et al. 2018

Opto-Electronic Advances

317

205

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Metasurfaces, two-dimensional equivalents of metamaterials, are engineered surfaces consisting of deep subwavelength features that have full control of the electromagnetic waves. Metasurfaces are not only being applied to the current devices throughout the electromagnetic spectrum from microwave to optics but also inspiring many new thrilling applications such as programmable on-demand optics and photonics in future. In order to overcome the limits imposed by passive metasurfaces, extensive researches have been put on utilizing different materials and mechanisms to design active metasurfaces. In this paper, we review the recent progress in tunable and reconfigurable metasurfaces and metadevices through the different active materials deployed together with the different control mechanisms including electrical, thermal, optical, mechanical, and magnetic, and provide the perspective for their future development for applications.

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Section: Resultsmentioning

confidence: 99%

Tunable and reconfigurable metasurfaces and metadevices

Nemati

Wang

Hong

et al. 2018

Opto-Electronic Advances

317

205

View full text Add to dashboard Cite

show abstract

“…The significant progress in information technology, electronics and wireless communication devices together with a new trend of miniaturization and Progress, Challenges and Opportunities in Divalent Transition Metal-Doped Cobalt Ferrites… DOI: http://dx.doi.org/10.5772/intechopen.93298 multifunctionality led to the necessity of new materials with special characteristics. Considering the structural, electric and magnetic properties, the nanosized ferrites may become important candidates for applications in microwave communication systems, electromagnetic devices, resonators and filters for satellites, broadcasting equipment, batteries, supercapacitors and many other microwave devices [70].…”

Section: Applications Of Dielectric Propertiesmentioning

confidence: 99%

Progress, Challenges and Opportunities in Divalent Transition Metal-Doped Cobalt Ferrites Nanoparticles Applications

Cadar¹,

Dippong²,

Senila³

et al. 2020

Advanced Functional Materials

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Engineered nanomaterials with tailored properties are highly required in a wide range of industrial fields. Consequently, the researches dedicated to the identification of new applications for existing materials and to the development of novel promising materials and cost effective, eco-friendly synthesis methods gained considerable attention in the last years. Cobalt ferrite is one of the nanomaterials with a wide application range due to its unique properties such as high electrical resistivity, negligible eddy current loss, moderate saturation magnetization, chemical and thermal stability, high Curie temperature and high mechanical hardness. Moreover, its structural, magnetic and electrical properties can be tailored by the selection of preparation route, chemical composition, dopant ions and thermal treatment. This chapter presents the recent applications of nanosized cobalt ferrites doped or co-doped with divalent transition ions such as Zn 2+ , Cu 2+ , Mn 2+ , Ni 2+ , Cd 2+ obtained by various synthesis methods in ceramics, medicine, catalysis, electronics and communications.

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“…In 2006, Linden et al proposed a 1D MFPC that can be utilized in the visible spectrum and affirmed the transfer features of the MFPC by experimentation [9]. In recent years, Bi et al took research in metamaterials based on ferrite dielectrics and found that the dielectric characteristics of the metamaterial can be modulated by changing the magnetic field in the ferrite [10]. Significant progress has been made with these researches and the ferrite materials have become widely used to satisfy the need for adjustability.…”

Section: Introductionmentioning

confidence: 99%

Multi-frequency coherent perfect absorption in the one-dimensional magnetized ferrite photonic structure

Zhang¹,

Wan²,

Zhang³

et al. 2022

J. Opt.

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A controllable multi-frequency absorption structure predicated on a one-dimensional (1-D) magnetized ferrite photonic structure (MFPS) that achieves coherent perfect absorption (CPA) is designed and further analyzed by utilizing the transfer matrix method. By introducing the filter structures to the MFPS and using the gradient descent optimization algorithms to optimize its layer parameters, the multi-frequency coherent absorption curve is obtained. The suggested MFPS brings out about six absorption peaks whose absorptance can be higher than 0.99 at the same time under the transverse electric (TE) mode. Moreover, the absorptance can be regulated from 0.99 to less than 0.1 by merely changing the phase deviation between the two incident waves to the front and rear surfaces. Besides, the studied results demonstrate that the intensity of coherent absorption and the position of absorption peaks can be adapted by altering the adscititious magnetic field and the thicknesses of ferrite layers. It follows that the absorption peaks can cover most frequency points from 58.6 THz to 65.9 THz via changing the thicknesses of the external magnetic field and ferrite layers. Moreover, the structure also has the potential for wide-angle absorption. This research furnishes a significant reference for the design of the multi-frequency absorption devices and phase sensors. K eywords:

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Tunable Dielectric Properties of Ferrite-Dielectric Based Metamaterial

Cited by 8 publications

References 29 publications

Tunable and reconfigurable metasurfaces and metadevices

Tunable and reconfigurable metasurfaces and metadevices

Progress, Challenges and Opportunities in Divalent Transition Metal-Doped Cobalt Ferrites Nanoparticles Applications

Multi-frequency coherent perfect absorption in the one-dimensional magnetized ferrite photonic structure

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