Czochralski Growth, Magnetic Properties and Faraday Characteristics of CeAlO3 Crystals

Guo, Feiyun; Li, Qiyuan; Zhang, Huai‐Min; Yang, Xiongsheng; Tao, Zhen; Chen, Xin; Chen, Jianzhong

doi:10.3390/cryst9050245

Cited by 16 publications

(12 citation statements)

References 37 publications

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“…[46]. The CeAlO 3 material [151] is also transparent up to ∼2500 nm and its Verdet constant is about twice as high as the one of CeF 3 at the 633 and 1064 nm wavelengths. Apart from these cerium-based materials, Verdet constant investigations of (Dy X Y 0.95−X La 0.05 ) 2 O 3 (with variable doping X = 0.7, 0.8 and 0.9) ceramics [129,130], EuF 2 crystal [42,159] and Dy 2 O 3 ceramics [48] were recently reported.…”

Section: Nir-mir Region (λ > 1100 Nm)mentioning

confidence: 97%

“…There are many more reports on promising magneto-active materials for the VIS-NIR region, which offer properties superior to the TGG crystal, most of them targeting on the enhancement of the Verdet constant. From the vast number of these materials, we may mention, e.g., NaTb(WO 4 ) 2 [136], TSLAG [81,137], Na 2 Tb 4 (MoO 4 ) 7 [138], LiCaTb 5 (BO 3 ) 6 [139], RE:TGG (RE= Ce [140], Pr [141], Ho [142], Tm [143] or Dy [144]), TbVO 4 [145], Nd:TbVO 4 [146], Na 2 Ce(MoO 4 ) 2 [147], TCZ [148,149], Tb 2 Hf 2 O 7 [150] or CeAlO 3 [151]. Table 2.…”

Section: Vis-nir Region (400 < λ < 1100 Nm)mentioning

confidence: 99%

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Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices

et al. 2019

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We review the progress in the investigation of the Verdet constant of new magneto-active materials for the Faraday-effect-based devices used in high-power laser systems. A practical methodology for advanced characterization of the Verdet constant of these materials is presented, providing a useful tool for benchmarking the new materials. The experimental setup used for the characterization is a flexible and robust tool for evaluating the Faraday rotation angle induced in the magneto-active material, from which the Verdet constant is calculated based on the knowledge of the magnetic field and the material sample parameters. A general model for describing the measured Verdet constant data as a function of wavelength and temperature is given. In the final part of this review, we present a brief overview of several magneto-active materials, which have been to-date reported as promising candidates for utilization in the Faraday devices. This overview covers room-temperature investigations of the Verdet constant of several materials, which could be used for the ultraviolet, visible, near-infrared and mid-infrared wavelengths.

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Section: Nir-mir Region (λ > 1100 Nm)mentioning

confidence: 97%

Section: Vis-nir Region (400 < λ < 1100 Nm)mentioning

confidence: 99%

Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices

et al. 2019

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“…Much more data about the Verdet constant can be found in the literature (or calculated from presented data) [ 43 , 125 , 159 , 161 , 162 , 163 , 164 , 165 , 166 , 167 , 168 , 169 , 170 , 171 , 172 , 173 , 174 , 175 , 176 , 177 , 178 , 179 , 180 , 181 ], but the value is usually given for a single wavelength and other figures of merit are often missing. Differences in reported data are understandable because of the high sensitivity of the parameters-to-dopants concentration.…”

Section: Choice Of the Faraday Materialsmentioning

confidence: 99%

Fiber Optic Sensors Based on the Faraday Effect

Mihailović

Petričević

2021

Sensors

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Some 175 years ago Michael Faraday discovered magnetic circular birefringence, now commonly known as the Faraday effect. Sensing the magnetic field through the influence that the field has on light within the fiber optic sensor offers several advantages, one of them fundamental. These advantages find application in the measurement of electric current at high voltages by measuring the induced magnetic field, thus warranting application for this kind of fiber optic sensor (FOS) in future smart grids. Difficulties in designing and manufacturing high-performance FOSs were greatly alleviated by developments in optical telecommunication technology, thus giving new impetus to magnetometry based on the Faraday effect. Some of the major problems in the processing of optical signals and temperature dependence have been resolved, yet much effort is still needed to implement all solutions into a single commercial device. Artificial structures with giant Faraday rotation, reported in the literature in the 21st century, will further improve the performance of FOSs based on the Faraday effect. This paper will consider obstacles and limits imposed by the available technology and review solutions proposed so far for fiber optic sensors based on the Faraday effect.

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“…As important representatives of photoelectric functional materials, the supplement of synthetic crystals increases continuously, and the improvement on the functions and qualities of the crystals are required [1,2]. Among the crystal growth methods, the Czochralski (Cz) technique is one of the most important methods employed for crystal production [3,4]. In the process of crystal growth by the Czochralski method, the temperature and concentration gradients induce the heat and mass transfer, and drive the diffusion and natural convections (including the thermo-solutal-capillary convection and capillary-buoyancy convections).…”

Section: Introductionmentioning

confidence: 99%

Mixed Oscillation Flow of Binary Fluid with Minus One Capillary Ratio in the Czochralski Crystal Growth Model

Chen

2020

Crystals

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This work presented a series of three-dimensional unsteady numerical simulations on the characteristics of the mixed oscillation flows of binary mixture in a Czochralski crystal growth model. The silicon-germanium melt is investigated and the capillary ratio is minus one. The simulation results showed that, for the special capillary ratio, the thermal and solutocapillary forces are imposed in opposite directions and counteract each other. With the effect of buoyancy, the balance between the capillary forces is disturbed. Mixed with the forced convection driven by rotation, the capillary-buoyancy convection is complex. The basic mixed flow streamlines are presented as various rolling cells. The directions of the rolls are dependent on the combinations of surface and body forces. With the increase of temperature gradient, the basic flow stability is broken, and the oscillations occur. The crucible rotation has an effective influence on the stability enhancement. However, affected by the crystal rotation, the critical condition experiences an increase to a turning point, and then undergoes a sharp reduction to zero. Once the instability is incubated, the surface oscillations are analyzed. For the three-dimensional steady flow, only spatial oscillations are observed circumferentially, and the surface patterns of spokes, rosebud, and pulsating ring are obtained. For the unsteady oscillation flow, the spiral hydrosoultal waves, rotating waves, and superimposition of spirals and spokes are observed, and the oscillation behaviors are also discussed.

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Czochralski Growth, Magnetic Properties and Faraday Characteristics of CeAlO3 Crystals

Cited by 16 publications

References 37 publications

Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices

Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices

Fiber Optic Sensors Based on the Faraday Effect

Mixed Oscillation Flow of Binary Fluid with Minus One Capillary Ratio in the Czochralski Crystal Growth Model

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