内蒙古师范大学学报（自然科学汉文版）
內矇古師範大學學報（自然科學漢文版）
내몽고사범대학학보（자연과학한문판）
JOURNAL OF INNER MONGOLIA NORMAL UNIVERSITY(NATURAL SCIENCE EDITION)
2011年
3期
270-273
,共4页
毕力格%特古斯%伊日勒图%王冬梅%王耀辉%赵志鹏
畢力格%特古斯%伊日勒圖%王鼕梅%王耀輝%趙誌鵬
필력격%특고사%이일륵도%왕동매%왕요휘%조지붕
过渡族金属%磁热效应%居里温度%磁熵变%一级相变
過渡族金屬%磁熱效應%居裏溫度%磁熵變%一級相變
과도족금속%자열효응%거리온도%자적변%일급상변
transition metal%magnetocaloric effect%Curie temperature%magnetic entropy ehange%first-order phase transition
用球磨和烧结法制备了Mn1.3Fe0.7PxSi1-x系列化合物.磁性测量结果表明,随着P含量的增加,居里温度由x=0.45时的320K降到x=0.55时的209K;外加磁场变化为1.5T时,在居里温度209K附近,Mn1.3Fe0.7P0.55Si0.45的最大磁熵变为11.3 J/(kg·K).该化合物的热滞为10.4K.良好的磁热效应性能和低廉的原料价格使得该系列化合物有望成为室温区磁制冷工质.
用毬磨和燒結法製備瞭Mn1.3Fe0.7PxSi1-x繫列化閤物.磁性測量結果錶明,隨著P含量的增加,居裏溫度由x=0.45時的320K降到x=0.55時的209K;外加磁場變化為1.5T時,在居裏溫度209K附近,Mn1.3Fe0.7P0.55Si0.45的最大磁熵變為11.3 J/(kg·K).該化閤物的熱滯為10.4K.良好的磁熱效應性能和低廉的原料價格使得該繫列化閤物有望成為室溫區磁製冷工質.
용구마화소결법제비료Mn1.3Fe0.7PxSi1-x계렬화합물.자성측량결과표명,수착P함량적증가,거리온도유x=0.45시적320K강도x=0.55시적209K;외가자장변화위1.5T시,재거리온도209K부근,Mn1.3Fe0.7P0.55Si0.45적최대자적변위11.3 J/(kg·K).해화합물적열체위10.4K.량호적자열효응성능화저렴적원료개격사득해계렬화합물유망성위실온구자제랭공질.
The Mn1.3Fe0.7PxSi1-x compounds with x=0.45.0.46.0.50.0.55 were synthesized by ball milling and solid-state sintering method.Magnetization measurements show that the Curie temperature of Mn1.3Fe0.7PxSi1-x compounds decreases from 320 K for x=0.45 to 209 K for X=0.55.A metamagnetic phase transition is observed above the Curie temperature for the compounds with x up to 0.55.The Mn1.3Fe0.7P0.55Si0.45 compound exhibits a large magnetoealoric effect of 11.3 J／(kg·K)for a field change from 0 tO 1.5 T near its Curie temperature of 209 K.Thermal hysteresis of this compound is 10 K.The excellent magnetoealoric properties and the low material COSt of these compounds are very promising for magnetocalorie applications.
