What is a yttrium iron garnet used for?
rare-earth garnets is YIG (yttrium iron garnet), which is used in a variety of microwave devices including radars, attenuators, filters, circulators, isolators, phase shifters, power limiters, and switches. YIG is also used in microwave integrated circuits in which thin films are placed on garnet substrates.
Is yttrium iron garnet a mineral?
Yttrium iron garnet (YIG) is a kind of synthetic garnet, with chemical composition Y 3Fe 2(FeO 4) 3, or Y3Fe5O12. It is a ferrimagnetic material with a Curie temperature of 560 K….
| Yttrium iron garnet | |
|---|---|
| Other characteristics | Ferromagnetic material |
Is Yttrium ferromagnetic?
Yttrium iron garnet (YIG) is a ferrite material with excellent magnetic and magneto-electric properties that make it the best magnetic material for high frequency applications [16].
Is YIG a ferromagnet?
Yttrium iron garnet (YIG, Y3Fe5O12) is a well-known ferromagnetic insulator with extremely low magnetic damping that has been widely used in microwave devices, and its spin wave properties have been extensively studied for decades. 1.
What is the crystal form of garnet?
Garnets generally produce symmetrical, cube-based crystals. The most common crystal shape among this group is the rhombic dodecahedron, a twelve-sided crystal with diamond shaped (rhombic) faces. The basic shape is a trademark for garnets, for no other crystal shape is so closely associated with a single mineral group.
Where is garnet from?
Where are garnets found? Garnets are found all over the world. There are many types of garnets and each type is found in different locations. Pyrope can be found in South Africa, Sri Lanka, China, and Madagascar, while Almandite originates from India, Brazil, and the USA.
What is garnet ferrites?
Garnet ferrites have the structure of the silicate mineral garnet and the chemical formula M3(Fe5O12), where M is yttrium or a rare-earth ion. In addition to tetrahedral and octahedral sites, such as those seen in spinels, garnets have dodecahedral (12-coordinated) sites.
Is YIG a word?
YIG (yig), n. Mineralogya synthetic yttrium iron garnet, used in electronics in filters and amplifiers.
How does a YIG oscillator work?
How Does YIG Work? YIG is a ferrite material that resonates at microwave frequencies when immersed in a DC magnetic field. This resonance is directly proportional to the strength of the applied magnetic field and has very linear “tuning” over multi-octave microwave frequencies.
What is the meaning of YIG?
Definition of YIG : a synthetic yttrium iron garnet having ferrimagnetic properties that is used especially as a filter for selecting or tuning microwaves.
What hardness is garnet?
between 7.5 and 8.5
Garnet is a naturally inert mineral that is a sharp, angular, 12-sided crystal (officially a rhombic dodecahedron), with a hardness of between 7.5 and 8.5 on the Mohs scale (where diamonds, which serve as the benchmark for hardness, rank as a 10).
What are the characteristics of garnet?
Garnet Physical and Chemical Properties They all have a vitreous luster, a transparent-to-translucent diaphaneity, a brittle tenacity, and a lack of cleavage. They can be found as individual crystals, stream-worn pebbles, granular aggregates, and massive occurrences.
What is Yig (yttrium iron garnet)?
Sergej O. Demokritov, in Solid State Physics, 2013 Insulating ferrites in general and yttrium iron garnet (YIG), in particular, play an important role for development of modern spin-based electronic (spintronics) [1] and its part connected with dynamic excitations in magnetism (magnonics) [2].
What is the lattice constant of Yig thin films?
The feedback ring systems considered in this chapter are all built on YIG thin films. The cubic unit cell in YIG has a lattice constant of 12.376 ± 0.004 Å.
What are the side effects of yttrium?
Yttrium is similar to the lanthanons and may have an anticoagulant effect on blood. Exposure to lanthanons may also lead to sensitivity to heat, itching, increased awareness of odor and taste, and liver damage. Iron compounds may cause vomiting, diarrhea, pink urine, black stool, and liver damage.
What is the dielectric constant of barium ferrite?
Barium ferrite has a saturation magnetization 4 πM0 = 4800 G, uniaxial anisotropy field Ha = 16.8 kOe, and a relative dielectric constant ɛ = 15. Results for H -tuning of the main dielectric mode in BaM are presented in Fig. 10.5.