@article { author = {Kameli, P. and Vaezi, H. and Ehsani, M. H. and Aslibeiki, B. and Salamati, H.}, title = {Structual, Magnetic, and Transport Properties of LaMn1-xCuxO3 (x= 0-0.125) Ceramics}, journal = {Advanced Ceramics Progress}, volume = {7}, number = {1}, pages = {1-10}, year = {2021}, publisher = {Materials and Energy Research Center (MERC) Iranian Ceramic Society (ICERS)}, issn = {2423-7477}, eissn = {2423-7485}, doi = {10.30501/acp.2021.233610.1044}, abstract = {The present study investigates the structural, magnetic, and electrical properties of non-stoichiometric  LaMn1-xCuxO3 (x= 0, 0.025, 0.05, 0.075, and 0.125) ceramics. The results of X-ray diffraction refinement indicated that all samples were crystallized in an orthorhombic structure and no apparent crystal structure change was introduced by doping Cu up to x=0.125. The Ferromagnetic (FM) nature revealed by non-stoichiometric LaMn1-xCuxO3-d was verified through the appearance of Paramagnetic-Ferromagnetic (PM-FM) transition temperatures in AC magnetic susceptibility measurement of the samples. Due to the coexistence of Antiferromagnetic (AFM) and FM phases, all samples contained Re-entrant Spin Glass (RSG) and Cluster Spin Glass (CSG) states. The results showed that FM phase was comparable or even dominant in the doped samples up to x=0.075; however, after doping, AFM phase overcame the FM phase as a result of reduction of double exchange interaction. Temperature dependence of resistivity measurement indicated that upon increasing the Cu-doping level, resistivity decreased, except for the x=0.125 sample, and that metal-insulator transition at low temperatures was detected in the doped samples. Furthermore, changing the magnetic phase in the case of x=0.125 sample from FM (in x=0.075) to AFM dominant phase was accompanied by changing the transport parameters obtained from small polaron hopping models.}, keywords = {Manganite oxides,Doping,Spin glass,Small polaron hopping}, url = {https://www.acerp.ir/article_127889.html}, eprint = {https://www.acerp.ir/article_127889_a06b74f3733531bfc1e9b64fd6ddcaf8.pdf} }