01738nas a2200241   4500008004100000245006800041210006700109260000800176300001200184490000800196520100300204100002401207700001801231700001601249700001401265700002001279700002001299700001701319700002601336700001801362700001601380856010001396       2018                        eng d00aStructural and magnetic properties of La2Ni1-xCoxMnO6 compounds0 aStructural and magnetic properties of La2Ni1xCoxMnO6 compounds  cJUN  a248-2560 v1023 aSingle phase monoclinic La2Ni1-xMnO6 (x = 0.2, 0.4, 0.8) compounds, henceforth, referred as LNCxMO (x = 0.2, 0.4, 0.8) have been prepared by Sol-gel technique. The structural study and redox titration suggest that the samples are both La and O deficient. The generated atomic models using Rietveld refined structural parameters show octahedral distortion In the double perovskite structure. X-ray photoelectron spectroscopy (XPS) study has been used to determine the predominant valence states of Ni, Mn and Co ions. LNCxMO (x = 0.2, 0.4) are found to be Heisenberg ferromagnets whereas LNC0.8MO is a phase segregated system. In LNC0.4MO and LNO0.8MO, at temperatures above T-c, chi(-1)(T) curve shows the characteristics of Griffiths phase. The study of ac susceptibility and Isothermal remanent magnetization (IRM) discard the possibility of any glassy state at low temperatures. The antiphase boundaries (APBs), antisite disorders (ASDs) and oxygen vacancies play important roles in this system.1 aPramanik, Debabrata1 aMukherjee, S.1 aDan, Shovan1 aNandy, A.1 aPradhan, S., K.1 aDasgupta, Papri1 aPoddar, Asok1 aMukherjee, Manabendra1 aManjunath, B.1 aJoy, P., A.  uhttps://library.ncl.res.in/content/structural-and-magnetic-properties-la2ni1-xcoxmno6-compounds