1) magnetic entropy change
磁熵变化
1.
From the measurement and calculation of magnetization under various temperatures, we have discovered large magnetocaloric effect with the ferromagnetic-paramagnetic transition, additional magnetism exchange action introduces additional magnetic entropy change.
通过不同温度下的等温磁化(M-H)曲线的测量和计算,发现伴随铁磁-顺磁(PM-FM)相变出现大的磁热效应,额外的磁性交换作用将导致额外的磁熵变化。
2.
From the measurement and calculation of magnetization under various temperatures, we have discovered large magnetocaloric effect with the ferromagnetic paramagnetic transition, additional magnetism exchange action introduces additional magnetic entropy change.
3MnO3的磁热效应进行了研究 ,通过不同温度下的等温磁化 (M H)曲线的测量和计算 ,发现伴随铁磁 顺磁相变出现大的磁热效应 ,额外的磁性交换作用将导致额外的磁熵变化 。
2) magnetic entropy change
磁熵变
1.
Study on the crystal structure and magnetic entropy change properties of La_(0.8)Pr_(0.2)Fe_(13-x)Si_x(x=1.8,2.0) intermetallic compounds;
La_(0.8)Pr_(0.2)Fe_(13-x)Si_x金属间化合物的晶体结构和磁熵变研究
2.
The crystal structure and magnetic entropy change of fast-quenched low purity Gd_5Si_2Ge_2 alloy;
快淬低纯Gd_5Si_2Ge_2合金的结构和磁熵变
3.
Study on magnetic entropy changes in Ce_2Fe_(16.5)Co_(0.5) alloy;
Ce_2Fe_(16.5)Co_(0.5)合金的磁熵变研究
3) magnetic entropy changes
磁熵变
1.
The magnetic measuremnet showed that the Curie temperature T_c increases from 246?K to 297?K by adding hydrogen atom, and the magnetic entropy changes around the Curie temperature decreases from -7.
磁性测量结果表明,H原子的引入,使合金的居里温度从246K提高到297K;同时,合金在居里温度附近的最大磁熵变从-7。
2.
The magnetization curves of these alloys were measured with vibration sample magnetometer, from which magnetic entropy changes were calculated and magnetocaloric effect were evaluated.
用振动样品磁强计测量它们的磁化曲线，从而计算出磁熵变，估计出磁热效应。
3.
The magnetic entropy changes(△SM) as a function of the temperature(T) in magnetic field (1 T) for DyCo2 samples have been calculated.
用振动样品磁强计测量DyCo2化合物的磁化曲线,采用二元函数在矩形区域的双一次插值逼近拟合出M (T, H )的二元函数表达式,然后根据磁熵变的热力学公式,计算出它的磁熵变值。
4) magnetic entropy
磁熵变
1.
Two kinds of room temperature refrigerant materials were studied in detail and their process, structure and the change of magnetic entropy were researched.
衡量磁致冷材料性能好坏的主要参量是磁熵变△Sm，目前无法通过直接测量得到磁熵变。
5) positive magnetic entropy changes
正磁熵变
6) isothermal magnetic entropy change
等温磁熵变
补充资料：等熵变化
分子式：
CAS号：
性质：一个体系从状态1变化到状态2的过程中，若其熵值不变，则称此为等熵过程，所经历的变化称为等熵变化。可逆的绝热变化，体系的熵值不变，是等熵变化。在工程上作为与真实绝热过程比较用的标准工况。例如喷管可视作绝热过程，而等熵过程将代表其最佳的工况。等熵过程常用来分析透平和压缩机的最大输出功和最小输入功。在工程热力学上这是个十分重要的过程。
CAS号：
性质：一个体系从状态1变化到状态2的过程中，若其熵值不变，则称此为等熵过程，所经历的变化称为等熵变化。可逆的绝热变化，体系的熵值不变，是等熵变化。在工程上作为与真实绝热过程比较用的标准工况。例如喷管可视作绝热过程，而等熵过程将代表其最佳的工况。等熵过程常用来分析透平和压缩机的最大输出功和最小输入功。在工程热力学上这是个十分重要的过程。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条