Doerr M, Lorenz W, Neupert T, Loewenhaupt M, Kozlova N V, Freudenberger J, Bartkowiak M, Kampert E, Rotter M
Institut für Festkörperphysik, Technische Universität Dresden, Dresden, Germany.
Rev Sci Instrum. 2008 Jun;79(6):063902. doi: 10.1063/1.2919882.
To simultaneously perform magnetization and magnetostriction measurements in high magnetic fields, a miniaturized device was developed that combines an inductive magnetometer with a capacitive dilatometer and, therefore, it is called "dilamagmeter." This combination of magnetic and magnetoelastic investigations is a new step to a complex understanding of solid state properties. The whole system can be mounted in a 12 mm clear bore of any cryostat usually used in nondestructive pulsed high field magnets. The sensitivity of both methods is about 10(-5) A m(2) for magnetization and 10(-5) relative changes in length for striction measurements. Measurements on a GdSi single crystal, which are corrected by the background signal of the experimental setup, agree well with the results of steady field experiments. All test measurements, which are up until now performed in the temperature range of 4-100 K, confirm the perfect usability and high stability in pulsed fields up to 50 T with a pulse duration of 10 ms.
为了在高磁场中同时进行磁化和磁致伸缩测量，研发了一种小型化装置，它将感应式磁力计与电容式膨胀仪相结合，因此被称为“磁弹仪”。这种磁性和磁弹性研究的结合是对固态特性进行复杂理解的新进展。整个系统可以安装在任何用于无损脉冲高场磁体的低温恒温器的12毫米内径中。两种方法的灵敏度对于磁化测量约为10^(-5) A·m²，对于磁致伸缩测量约为10^(-5)的长度相对变化。对GdSi单晶的测量通过实验装置的背景信号进行了校正，与稳态场实验结果吻合良好。迄今为止在4 - 100 K温度范围内进行的所有测试测量都证实了该装置在高达50 T、脉冲持续时间为10 ms的脉冲场中的完美可用性和高稳定性。
