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EPR line broadening and magnetic phase transitions in antiferromagnetic FeP3O9
1975
Physical Review B
The EPR linewidths of polycrystallinesamples of antiferromagnetic ferric metaphosphate {FeP3Oq) has been measured in the range 0.01 g T -T& g 100 K (T"= 9.3 K). The widths were fitted to a Power-jaw form (T -Ta)r In t.he reduced tem-Perature range 0.03 & e & 0.7 [c=(T -T")IT"], the best fit gives y~-0.67. For a & 0.02, the change in linewidth is very slight. At high temperatures such that c & 1, far above the critical regime, we obtained y = -1.65. These results are quite similar to some recent
doi:10.1103/physrevb.12.1868
fatcat:sigbv3iqqnhgpc64n4a5ljwqgm