TY - JOUR
T1 - Effect of nonmagnetic impurities on the residual electron-spin-resonance linewidth of Er
T2 - Ag dilute alloys
AU - Dahlberg, E. D.
AU - Souletie, J.
AU - Dodds, S. A.
AU - Chock, E. P.
AU - Orbach, R. L.
PY - 1990/1/1
Y1 - 1990/1/1
N2 - We have undertaken a systematic investigation of the effect of nonmagnetic impurities on the residual (T0 K) electron-spin-resonance linewidth of erbium in dilute [200 parts per million atomic (ppm)] Er:Ag alloys. The nonmagnetic impurities used were In, Sn, Sb, Y, and Lu in the concentration range of 500-4600 ppm. The linewidth broadening caused by these impurities was found to be 0.2±0.11, 0.49±0.1, 0.51±0.11, 1.4±0.18, and 1.37±0.32 G/1000 ppm atomic frequency (GHz) for In, Sn, Sb, Y, and Lu, respectively. The most reasonable source of the Er line broadening is the mixing of the crystal-field levels of the Er by the Kohn-Vosko oscillations in the charge density. The broadening of the Er resonance line due to In, Sn, and Sb doping is consistent with the expected form of the oscillations. Also, Y and Lu are equivalent in the broadening of the Er line, as expected. However, the scaling of the Y and Lu broadening compared to that due to the In, Sn, and Sb is not consistent. The reasons for this are not understood.
AB - We have undertaken a systematic investigation of the effect of nonmagnetic impurities on the residual (T0 K) electron-spin-resonance linewidth of erbium in dilute [200 parts per million atomic (ppm)] Er:Ag alloys. The nonmagnetic impurities used were In, Sn, Sb, Y, and Lu in the concentration range of 500-4600 ppm. The linewidth broadening caused by these impurities was found to be 0.2±0.11, 0.49±0.1, 0.51±0.11, 1.4±0.18, and 1.37±0.32 G/1000 ppm atomic frequency (GHz) for In, Sn, Sb, Y, and Lu, respectively. The most reasonable source of the Er line broadening is the mixing of the crystal-field levels of the Er by the Kohn-Vosko oscillations in the charge density. The broadening of the Er resonance line due to In, Sn, and Sb doping is consistent with the expected form of the oscillations. Also, Y and Lu are equivalent in the broadening of the Er line, as expected. However, the scaling of the Y and Lu broadening compared to that due to the In, Sn, and Sb is not consistent. The reasons for this are not understood.
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U2 - 10.1103/PhysRevB.41.10897
DO - 10.1103/PhysRevB.41.10897
M3 - Article
AN - SCOPUS:35949011731
SN - 0163-1829
VL - 41
SP - 10897
EP - 10901
JO - Physical Review B
JF - Physical Review B
IS - 16
ER -