Owing to the strong neutron absorption of 151Eu,151Eu free 153EuMnO3-δhas been synthesized to collect the neutron diffraction data for analyzing the magnetic structure of EuMnO3-δ.The obtained neutron diffraction da...Owing to the strong neutron absorption of 151Eu,151Eu free 153EuMnO3-δhas been synthesized to collect the neutron diffraction data for analyzing the magnetic structure of EuMnO3-δ.The obtained neutron diffraction data of 153EuMnO3-δindicates that the magnetic diffraction peaks corresponding to cAAFM(canted A-type antiferromagnetic)phase can be observed,but the magnetic diffraction peaks corresponding to expected ICAFM(incommensurate antiferromagnetic)phase may be too weak to be observed.展开更多
Many elements can be doped into the A site of perovskite BaBiO_(3)-based superconductors,but only Bi,Pb,Tl,Sb,Mg,and Na are found in the B site.Here,the successful synthesis of Ba(Bi_(0.25)Pb_(0.75))_(1-x)In_(x)O_(3-...Many elements can be doped into the A site of perovskite BaBiO_(3)-based superconductors,but only Bi,Pb,Tl,Sb,Mg,and Na are found in the B site.Here,the successful synthesis of Ba(Bi_(0.25)Pb_(0.75))_(1-x)In_(x)O_(3-δ)superconductors by solid state reaction provides an example with indium located in the B site.The X-ray,neutron,and selected area electron diffraction data indicate that all the samples crystallize in the noncentrosymmetric space group P1 at room temperature.The superconductive transition temperature T_(c)^(zero)of Ba(Bi_(0.25)Pb_(0.75))_(1-x)In_(x)O_(3-δ)decreases with an increase of indium,which is attributed to the fact that the hole concentration in the samples departs from the optimal hole doping state of BaBi_(0.25)Pb_(0.75)O_(3-δ)superconductor.展开更多
基金This work is supported by the National Natural Science Foundation of China(Grant 21771007).
文摘Owing to the strong neutron absorption of 151Eu,151Eu free 153EuMnO3-δhas been synthesized to collect the neutron diffraction data for analyzing the magnetic structure of EuMnO3-δ.The obtained neutron diffraction data of 153EuMnO3-δindicates that the magnetic diffraction peaks corresponding to cAAFM(canted A-type antiferromagnetic)phase can be observed,but the magnetic diffraction peaks corresponding to expected ICAFM(incommensurate antiferromagnetic)phase may be too weak to be observed.
基金supported by the National Natural Science Foundation of China(Grant 21771007).
文摘Many elements can be doped into the A site of perovskite BaBiO_(3)-based superconductors,but only Bi,Pb,Tl,Sb,Mg,and Na are found in the B site.Here,the successful synthesis of Ba(Bi_(0.25)Pb_(0.75))_(1-x)In_(x)O_(3-δ)superconductors by solid state reaction provides an example with indium located in the B site.The X-ray,neutron,and selected area electron diffraction data indicate that all the samples crystallize in the noncentrosymmetric space group P1 at room temperature.The superconductive transition temperature T_(c)^(zero)of Ba(Bi_(0.25)Pb_(0.75))_(1-x)In_(x)O_(3-δ)decreases with an increase of indium,which is attributed to the fact that the hole concentration in the samples departs from the optimal hole doping state of BaBi_(0.25)Pb_(0.75)O_(3-δ)superconductor.
