Phase transitions in a polycrystalline compound Ho0.1Mn0.9S

Romanova, O.B., Aplesnin, S.S., Sitnikov, M.N., Udod, L.V., Zelenov, F.V.// Solid State Communications//

Sequence of structural transitions in the magnetically ordered region and a displacement-type structural transition at T = 220 K accompanied by the variation in the thermal expansion coefficient, ultrasound attenuation coefficient, g factor, and polarization current in the polycrystalline compound Ho0.1Mn0.9S was found. The electronic transitions above room temperature were established on the basis of the measurements of the conductivity, ultrasound attenuation maxima, and IR spectra.