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The CuO doped with 5%20% Mn(molar fraction) solids were sintered from CuO and MnO_2 powder at high temperature (1 273 K) for 8 h. X-ray diffraction was used to determine the solid crystallinity and to address the formation of secondary phases. It is found that it is difficult to achieve pure Cu_(1-x)Mn_xO phase using standard solid phase reaction. However, sintering under a pressure of 27.7 MPa significantly reduces the undesirable second phase CuMn_2O_4, providing a route to achieve pure Cu_(1-x)Mn_xO phase. SQUID magnetometry was employed to characterize the magnetic properties. Mn-doped CuO presents ferromagnetic characteristics below 70 K. Electrical transport properties were measured in a current-perpendicular-to-plane(CPP) geometry using the PPMS, which suggests variable-range hopping mechanism.
The CuO doped with 5% 20% Mn fractional solids were sintered from CuO and MnO_2 powder at high temperature (1 273 K) for 8 h. X-ray diffraction was used to determine the solid crystallinity and to address the formation of It is found that it is difficult to achieve pure Cu_ (1-x) Mn_xO phase using standard solid phase reaction. However, sintering under a pressure of 27.7 MPa significantly reduces the undesirable second phase CuMn_2O_4, providing a route to achieve pure Mn-doped CuO presents ferromagnetic properties below 70 K. Electrical transport properties were measured in a current-perpendicular-to-plane (CPP) geometry using the Cu_ (1-x) Mn_xO phase. SQUID magnetometry was employed to characterize the magnetic properties. PPMS, which suggests variable-range hopping mechanism.