久久一区二区三区四区_欧美高清dvd_日韩欧美在线看_国产精品欧美一区二区_av天天看_欧美精品免费观看二区

多鐵性材料中的磁電相互作用因具備廣泛的應用前景而成為科學工作者的***個研究重點。在基于清華大學南策文教授實驗室已有測量方法上，作進***步改進后推出了高度自動化的多鐵性磁電測量系統。

該套系統允許用戶直接測量樣品正磁電系數大小及相位隨著偏置直流磁場大小的變化、隨外加交流磁場幅值大小和頻率大小的變化、隨樣品與磁場夾角大小的變化、隨不同溫度的變化。

系統自帶可視化全自動的高***操作軟件，保證了用戶在*短的時間內獲取可靠的測量數據。

基本測量參數 

磁電信號測量精度范圍：1uV(鎖相)  
相位范圍：-180 －－180

相位精度：1度
交流頻率：1M Hz

直流磁場：±1T 
磁場控制精度：< 2 Oe
交流磁場：6 Oe 

自動轉角度精度：1度

電阻率測量精度：0.5%
溫度范圍：90K－－300K
溫度穩定度：±0.5K

不同溫度下的磁電信號測量曲線：

薄膜樣品的磁電信號測量曲線，幅值小于5uV

具有腳本功能的測量軟件

Magnetoelectric interaction in multiferroic materials has become a research focus for scientists because of its wide application prospect.Based on the existing measurement methods in professor nan ce wen＇s laboratory of tsinghua university, a highly automated multi-ferromagnetic measurement system was developed.

The system allows the user to directly measure the size ａnd phase of the positive magnetoelectric coefficient of the sample with the size of the bias dc magnetic field, the magnitude ａnd frequency of the external ac magnetic field, the Angle between the sample ａnd the magnetic field, ａnd the temperature.

The system has visual automatic advanced operating software to ensure that the user can obtain reliable measurement data in the shortest time.

Basic measurement parameter

Magnetoelectric signal measurement accuracy range: 1uV(phase-locked)

Phase range: -180 －－180

Phase accuracy: 1 degree

Maximum ac frequency: 1M Hz

Maximum dc magnetic field: ±1T

Accuracy of magnetic field control: < 2 Oe

Maximum ac magnetic field: 6 Oe

Automatic rotation accuracy: 1 degree

Resistivity measurement accuracy: 0.5%

Temperature range: 90K－－300K

Temperature stability: ± 0.5k