本文在利用超导磁体产生可控、不稳定磁场的基础上,对布鲁克DRX 400谱仪的锁场系统进行了改造。通过编辑信号发生器的输入源,使信号发生器产生各种需要的信号波形。只要对纹波特征和冷却水系统的不稳定性足够了解,完全可以利用超导磁体来模拟有源磁体的磁场。这清楚表明由于有源磁体磁场的波动性,无法直接使用FM U 1200磁场计来测量有源磁体的磁场。
Drastically different two-phase microstructures have been reported for alloy epitaxial films,including self-organized nanoscale concentration modulations of vertical and lateral stripes and randomly o
During the past decade,we have studied the phase stabilities and phase equilibria in ternary systems based on titanium.Titanium alloys are very important materials for modern developments in medicine
Three-dimensional atom probe (3DAP) technique has been used to study the nucleation and growth of M23C6carbide in a supersaturated multi-component Fe-based alloy aged at 800℃.3D images indicate that t
By means of CALPHAD (CALculation of PHAse Diagram) technique,the phase diagram and thermodynamic data of the Ce-Si system were critically assessed.The Ce-Si system contains four solution phases (liqui
The phase equilibria in the Mg-Pb-Zn and Mg-Pb-Sn ternary systems were investigated by means of optical microscopy,electron probe microanalysis and X-ray diffraction.Three isothermal sections of Mg-Pb