Yttrium iron garnet crystal has a chemical formula of Y3Fe5O12, (or 3Y2O3 ⋅ 5Fe2O3) the five iron(III) ions occupy three tetrahedral (A sites) sites and two octahedral (B sites) and, with the yttrium(III) ions coordinated by eight oxygen ions in an irregular cube. The iron ions in the two coordination sites (A and B sites) are antiferromagnetically coupled. Assuming Fe3+ has an atomic moment of 5µB, calculate the magnetization of YIG and compare your results to the real magnetization of YIG.

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on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.