National Taiwan University Dept Chem EngnPeleckis, G.G.PeleckisWang, X.L.X.L.WangLiu, R.S.R.S.LiuDou, S.X.S.X.Dou2006-11-142018-06-282006-11-142018-06-282005-10http://ntur.lib.ntu.edu.tw//handle/246246/200611150121266We report on magnetic properties and a Co K-edge X-ray absorption spectroscopy (XAS) study of polycrystalline bulk Zn1 Co O ( = 0 10 0 15 0 17) samples. All samples show paramagnetic behavior and no ferromagnetism was observed. XAS results showed that for all samples the valence of Co is 2+. Spin state assessment derived from Currie–Weiss fitting indicated a possible spin state transition from Co2+ high spin to Co2+ low spin. Calculated e values for samples with = 0 10 and 0 15 indicated an orbital contribution to the effective magnetic moment of the Co ion.application/pdf214598 bytesapplication/pdfen-USParamagnetic materialsspintronicsjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/200611150121266/1/2407.pdf