Magnetic Properties of Praseodymium Iron Garnet and Neodymium Iron Garnet.
01 January 1986
We have measured saturation magnetization, ferromagnetic resonance linewidth, effective g factor, and magnetocrystalline anisotropy coefficients on single crystal samples of praseodymium iron garnet (PrIG) and neodymium iron garnet (NdIG). Saturation magnetizations were measured from 77K to 570K. The other properties were measured from 150K to 350K in PrIG and from 200K to 450K in NdIG. PrIG has a positive first order magnetocrystalline anisotropy coefficient in contrast with all the other single rare earth iron garnets. Our results support the idea that the contribution of praseodymium and neodymium ions in an iron garnet lattice to linewidth and anisotropy varies with lattice parameter.