In this study,the temperature of the low-temperature reduction-diffusion(LTRD)process was successfully decreased to below 600℃by introducing LiClKCl eutectic molten salt with a low eutectic point(352℃)as a solvent f...In this study,the temperature of the low-temperature reduction-diffusion(LTRD)process was successfully decreased to below 600℃by introducing LiClKCl eutectic molten salt with a low eutectic point(352℃)as a solvent for Ca reductant.Therefore,the Sm-Fe binary compounds,which were synthesizable at previously-unexplored low temperatures by the LTRD process using LiCl-KCl eutectic molten salt,were investigated,including whether a new metastable or ThMn_(12)-type Sm-Fe binary phase was formed.The Sm-Fe phase transitions of the SmFe binary compounds at a low temperature were identified,and it was found that MgCu_(2)-type Sm-Fe,PuNi_(3)-type SmFe and TbCu_(7)-type Sm-Fe phases were synthesized and stable at 400,500 and 550℃respectively.Although no new metastable Sm-Fe and ThMn_(12)-type Sm-Fe compounds were discovered in this study,this work can demonstrate that it is possible to synthesize the Sm-Fe phase at very low temperatures by the LTRD process for the first time.展开更多
Sm-Fe alloy films were electrodeposited in a high static magnetic field with the magnetic flux is perpendicular to the electric current.The samples were prepared on Cu substance in an aqueous solution by constant volt...Sm-Fe alloy films were electrodeposited in a high static magnetic field with the magnetic flux is perpendicular to the electric current.The samples were prepared on Cu substance in an aqueous solution by constant voltage method.The magnetic flux density used in the experiments were 0 T,2 T and 4 T,respectively.The microstructures,preferential orientation,composition of samples were characterized by SEM(equipped with EDS),AFM and XRD,respectively.The results showed that the thickness of films increased,whereas the concentration of Sm in films ascended first and then descended with the increasing of the flux density.The crystal grains were coarsened under the magnetic fields.The morphology of grains changed from granular at 0 T,to rough at 2 T and to cauliflower like at 4 T.The AFM results confirmed the different roughness of samples.However,the external field has not influenced the orientation of samples significantly.展开更多
基金financially supported by"Adaptable and Seamless Technology Transfer Program through Target-Driven R&D(A-STEP),(No.JPMJTM20EB)commissioned by the Japan Science and Technology Agency(JST)。
文摘In this study,the temperature of the low-temperature reduction-diffusion(LTRD)process was successfully decreased to below 600℃by introducing LiClKCl eutectic molten salt with a low eutectic point(352℃)as a solvent for Ca reductant.Therefore,the Sm-Fe binary compounds,which were synthesizable at previously-unexplored low temperatures by the LTRD process using LiCl-KCl eutectic molten salt,were investigated,including whether a new metastable or ThMn_(12)-type Sm-Fe binary phase was formed.The Sm-Fe phase transitions of the SmFe binary compounds at a low temperature were identified,and it was found that MgCu_(2)-type Sm-Fe,PuNi_(3)-type SmFe and TbCu_(7)-type Sm-Fe phases were synthesized and stable at 400,500 and 550℃respectively.Although no new metastable Sm-Fe and ThMn_(12)-type Sm-Fe compounds were discovered in this study,this work can demonstrate that it is possible to synthesize the Sm-Fe phase at very low temperatures by the LTRD process for the first time.
文摘Sm-Fe alloy films were electrodeposited in a high static magnetic field with the magnetic flux is perpendicular to the electric current.The samples were prepared on Cu substance in an aqueous solution by constant voltage method.The magnetic flux density used in the experiments were 0 T,2 T and 4 T,respectively.The microstructures,preferential orientation,composition of samples were characterized by SEM(equipped with EDS),AFM and XRD,respectively.The results showed that the thickness of films increased,whereas the concentration of Sm in films ascended first and then descended with the increasing of the flux density.The crystal grains were coarsened under the magnetic fields.The morphology of grains changed from granular at 0 T,to rough at 2 T and to cauliflower like at 4 T.The AFM results confirmed the different roughness of samples.However,the external field has not influenced the orientation of samples significantly.
