China 
Africa 
Explore chapters and articles related to this topic
Biosensing and Cancer Treatment with Magnetic Nanoparticles
Published in Li Jun, Wu Nianqiang, Biosensors Based on Nanomaterials and Nanodevices, 2017
Stefan Bossmann, Viktor Chikan, Raj Kumar Dani
Variation of the important magnetic parameters depending on the physical state shows that in order to effectively apply these magnetic NPs under physiological conditions one requires techniques that can shed some light on how the aggregation states can affect magnetic properties. Faraday rotation has been found to be greatly enhanced in magnetic NPs, even compared to traditional Faraday rotor materials such as terbium gallium garnet. As will be shown next, Faraday rotation can be very sensitive to the aggregation state of the magnetic NPs and can provide a characterization tool to describe the dynamics of magnetic moments in these aggregates. Typically, magneto-optical effects provide physical information on the electronic and spin structure of materials. Faraday rotation is the rotation of
Materials with Magnetic-X Effects
Published in Chen Wu, Jiaying Jin, Frontiers in Magnetic Materials, 2023
Deeper understandings on the crystal growth theory, together with the continual advancement of processing technology have yielded breakthroughs in the field of magneto-optical crystals during the past decades. The majority of current magneto-optical applications are based on the garnet-type rare-earth ferrite crystals to provide high Verdet constants and unique magneto-optical performance. The benchmark materials include the yttrium iron garnet (YIG, Y3Fe5O12), terbium aluminum garnet (TAG, Tb3Al5O12) and terbium gallium garnet (TGG, Tb3Ga5O12) (Geho et al., 2004).
Polarimetric Optical Fiber Sensors
Published in Shizhuo Yin, Paul B. Ruffin, Francis T. S. Yu, Fiber Optic Sensors, 2017
The coefficients α and β are specific to each material and the wavelength used to interrogate the sensor. The sensitivity of two materials, terbium gallium garnet (TGG) and Faraday rotator-5 (FR5) glass, are shown for illustrative purposes in Figure 3.26 because both have relatively high Verdet constants and are readily available commercially. The Verdet constants were estimated from data supplied by the manufacturer and verified by experiment and are displayed in Figure 3.26 at two optical wavelengths (633 and 850 nm) over a typical operational temperature range (250 to 350 K).
Fabrication of ridge waveguide on the ion-implanted TGG crystal by femtosecond laser ablation
Published in Journal of Modern Optics, 2020
Jing-Yi Chen, Jie Zhang, Liao-Lin Zhang, Chun-Xiao Liu
A < 111 > oriented terbium gallium garnet crystal was grown by the Czochralski technique. The experimental sample was cut into a cuboid with a size of 10.0 × 5.0 × 1.0 mm3 and optically polished to mirror smoothness. The transmission characteristics of the TGG crystal have been recorded in the wavelength range of 300-1500 nm by a Perkin-Elmer Lambda 950 UV-VIS-NIR spectrophotometer at room temperature.