EPJ Web of Conferences 40, 15003 (2013)
https://doi.org/10.1051/epjconf/20134015003

Magnetic Properties of La_0.9Ag_0.1(Mn_1-xCo_x)O₃ under Pressure

¹ Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovak Republic
² Institute of Physics ASCR, v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic
³ Institute for Chemical Technology of Inorganic Materials, Johannes Kepler University, 4040 Linz, Austria

Abstract

In our paper we report on magnetic properties of La_0.90Ag_0.10(Co_xMn_1-x)O₃ ferromagnetic ceramics (x = 0.00 and0.03) which were studied in pressures up to 0.9 GPa. Magnetic transition at the Curie temperature T_C is accompanied with metal insulator transition with a maximum at T* which is shifted to lower temperature with applied magnetic field. The Curie temperature is decreasing with substitution of Co for Mn and is ranging from 178 K to 126.5 K. Hydrostatic pressure increases T_C for sample with x = 0.03 nearly linearly with the pressure coefficient dT_c/dp = 5.7 K/GPa. Hysteresis loop is affected marginally; µ_s increases and H_c decreases with pressure.