电子元件与材料
電子元件與材料
전자원건여재료
ELECTRONIC COMPONENTS & MATERIALS
2015年
1期
58-61
,共4页
层状钴氧化物%团簇玻璃%变磁性转变%相分离%反铁磁转变%Fe掺杂
層狀鈷氧化物%糰簇玻璃%變磁性轉變%相分離%反鐵磁轉變%Fe摻雜
층상고양화물%단족파리%변자성전변%상분리%반철자전변%Fe참잡
layered cobalt oxide%cluster glass%metamagnetism transition%phase separation%antiferromagnetic transition%Fe doping
采用固相反应法制备了GdBaCo1.8Fe0.2O5.5–δ块体，通过XRD及PPMS测量表征了样品的结构及磁性特征。研究结果表明，样品为单相正交层状钙钛矿结构，样品磁矩和测量历史有关，呈现团簇玻璃行为。样品在反铁磁奈尔温度以下存在变磁性转变行为，转变磁场区域较宽，转变磁场强度随着温度升高而降低。这些磁性行为被认为和掺铁样品中的相分离相关。
採用固相反應法製備瞭GdBaCo1.8Fe0.2O5.5–δ塊體，通過XRD及PPMS測量錶徵瞭樣品的結構及磁性特徵。研究結果錶明，樣品為單相正交層狀鈣鈦礦結構，樣品磁矩和測量歷史有關，呈現糰簇玻璃行為。樣品在反鐵磁奈爾溫度以下存在變磁性轉變行為，轉變磁場區域較寬，轉變磁場彊度隨著溫度升高而降低。這些磁性行為被認為和摻鐵樣品中的相分離相關。
채용고상반응법제비료GdBaCo1.8Fe0.2O5.5–δ괴체，통과XRD급PPMS측량표정료양품적결구급자성특정。연구결과표명，양품위단상정교층상개태광결구，양품자구화측량역사유관，정현단족파리행위。양품재반철자내이온도이하존재변자성전변행위，전변자장구역교관，전변자장강도수착온도승고이강저。저사자성행위피인위화참철양품중적상분리상관。
Bulk GdBaCo1.8Fe0.2O5.5-δ was synthesized using the solid state action method. The structure and magnetic properties of the prepared sample were studied through XRD and PPMS measurements. The results indicate that the sample is of single phase with layered orthorhombic perovskite structure. The magnetic moment is related to the measurement history, which indicates the cluster glass behavior. The metamagnetism was observed for the sample below Neel temperature through a large magnetic field region. The metamagnetic transition temperature decreases with the increase of temperature. These magnetic behaviors were regarded as the result from phase separation in Fe doped sample.
