(La_(0.67)Tb_(0.33))_(2/3)Sr_(1/3)MnO_(3) has been studied in order to probe mechanisms responsible for the giant magnetore-sistonce ratios and the lattice effect in this kind of compound.The experiment has shown a st...(La_(0.67)Tb_(0.33))_(2/3)Sr_(1/3)MnO_(3) has been studied in order to probe mechanisms responsible for the giant magnetore-sistonce ratios and the lattice effect in this kind of compound.The experiment has shown a strong connection between the magnetotransport and magnetovolume properties.An applied magnetic Geld not only gives rise to a large negative magnetoresistance(-900%)but also produces two different magnetovolume effects which reflect two different magnetostriction mechanisms in the compound.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.19890310(4).
文摘(La_(0.67)Tb_(0.33))_(2/3)Sr_(1/3)MnO_(3) has been studied in order to probe mechanisms responsible for the giant magnetore-sistonce ratios and the lattice effect in this kind of compound.The experiment has shown a strong connection between the magnetotransport and magnetovolume properties.An applied magnetic Geld not only gives rise to a large negative magnetoresistance(-900%)but also produces two different magnetovolume effects which reflect two different magnetostriction mechanisms in the compound.
