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Dopant-dependence on Charge-orbital Order in Impurity Doped Layered Manganites
Yuki Yamaki,Yuichi Yamasaki,Hironori Nakao,Youichi Murakami,Yoshio Kaneko,Yoshinori Tokura 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
In this study we have investigated dopant effects on a typical charge-orbital ordered state ina single layered manganite La0.5Sr1.5MnO4 using magnetization measurement and resonant x-rayscattering technique. We have studied how the charge-orbital ordered state is affected by the 3%substitution of Cr, Fe and Ga ions for Mn ions. It is revealed that the impurity doping suppresses thelong-range charge-orbital order, in which the degree of suppression strongly depends on dopant ions,and eventually forms a phase-separated ground state between charge-orbital order and ferromagneticstates.