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Oxygen Vacancy and Magnetism of a Room Temperature Ferromagnet Co-doped TiO2
Ikuo Nakai,M. Sasano,K. Inui,T. Korekawa,H. Ishijima,H. Katoh,Y. J. Li,M. Kurisu 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
We report the local structure and the magnetic properties of a Co-doped TiO2 prepared by usingthe solid state reaction of milling with subsequent annealing. The Co-doped TiO2 shows a hysteresisbehavior in the magnetization curve at room temperature, which maintains the same rutile-typestructure as that of the starting material TiO2. The extended x-ray absorption fine structuremeasurement reveals that it contains some oxygen vacancies only around a Co atom which occupiesa Ti site. This supports the oxygen vacancy mediated ferromagnetic exchange mechanism.
Yimiti, W.,Yahaya, M.S.,Hiraoka, H.,Yamamoto, Y.,Inui, K.,Takeda, M.,Tsukahara, A.,Goto, M. Asian Australasian Association of Animal Productio 2004 Animal Bioscience Vol.17 No.5
The experiment of silage for preservation of fresh Italian ryegrass (Lolium multiflorum) was carried out to examine whether the fermentation quality and microbial degradation in the rumen can be altered by the treatment of amino acids fermentation byproduct (AFB). The plant was ensiled for 40 days with 4 treatments of different ratios of AFB and sugarcane molasses (SCM) mixture. The treatment 2 (T2, AFB:SCM=100:0) and treatment 3 (T3, AFB:SCM=40:60) silages showed higher (p<0.05) concentrations of lactic acids, lower (p<0.05) pH and dry matter (DM) losses than the Control (T1, none additive) and treatment (T4, AFB:SCM=0:100) silages. The treatments 2 and 3 contained higher (p<0.05) DM and crude protein contents in silages compared to treatments 1 and 4 silages. The NDF, ADF and cellulose contents were also lower (p<0.05) in T2, T3 and T4 silages than T1 silage and fresh material before ensiled. The in situ rumen DM, NDF, ADF, hemicellulose and cellulose degradability was also higher (p<0.05) in T2, T3 and T4 silages than T1 silage, while the highest improvement was achieved with addition of AFB:SCM at level of 40:60 at ensiling. The result in this study indicates that the addition of AFB and SCM additives improved the silage fermentation and cell wall degradability of Italian ryegrass silage.