Analysis of the magnetic response of YIG doped with Ce3+, Nd3+ and Bi3+
Abstract
Yttrium iron garnet, YIG (Y3Fe5O12), is a ceramic with magnetic dielectric and optical properties, attributed to its crystalline structure. The YIG contains 160 ions that form tetrahedral, octahedral, and dodecahedral holes; as well as the location of cations, distortion and atomic interactions. Its low coercivity and minimal induced current losses is useful in devices that operate in microwaves. In order to broaden the range of applications, Y3+ ions (1.019Å and 0 µB) are replaced by Ce3+ (1.01Å and 1.0 µB), Nd3+ (1.109Å and 3.62 µB) and Bi3+ (1.17Å and 0 µB). The effect of the type and level of doping, on the crystalline structure and magnetic properties of the doped YIG, is evaluated when high-energy grinding assisted with thermal treatment is used as a synthesis method.
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