EKHI

Magnetic ordering effects on the reflectivity of EuS and EuSe

C. R. Pidgeon, J. Feinleib, W. J. Scouler, J. Hanus, J. O. Dimmock, T. B. Reed

The reflectivity of the ferromagnetic semiconductors EuS and EuSe has been measured as a function of temperature and polarization in a domain orienting magnetic field. The triplet structure below T_c and the doublet above are evidence that the absorption edge transition is 4f⁷ (⁸S₇₂) → 4f⁶(⁷F_J 5d (t_2g). © 1969.

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Materials

Curve 1

Temperature K: 298 Wavelength Range, μm: 0.0886-0.611 Geometry θ' θ'': 10° 10° Composition (weight percent), Specifications, and Remarks: EUROPIUM SULFIDE, EuS; powder; pressed and polished; data extracted from smooth curve.

Wavelength / 𝜇m	Reflectance /
0.0886	0.062
0.0952	0.071
0.1	0.078
0.117	0.101
0.12	0.103
0.127	0.107
0.134	0.107
0.148	0.105
0.155	0.107
0.172	0.121
0.178	0.121
0.196	0.119
0.205	0.121
0.221	0.13
0.249	0.116
0.259	0.136
0.283	0.167
0.294	0.169
0.325	0.133
0.332	0.129
0.349	0.123
0.364	0.114
0.394	0.098
0.434	0.09
0.463	0.089
0.477	0.092
0.534	0.119
0.611	0.16