Vibrating Sample/Alternating Gradient Magnetometer (VSM/AGM) System

磁性对于帮助理解地质材料的起源和随后的历史是非常有用的。许多磁特性（居里温度等）此外，这些相同的特性对成分/氧化状态、应变（压力）、大小和形状敏感。在解释地球和行星科学中通常遇到的复杂系统时，了解这些参数至关重要。为了充分提取这些信息，通常需要在可变的外加磁场下，在宽范围的温度（-269 ° C至800°C）和不同的气氛（空气，氩气等）下测量小样品（<50 mm）的磁化强度。进行这种工作的最灵敏、多功能、易于使用的商用仪器是振动样品磁力计和交变梯度磁力计（VSM+AGM）的组合。我们想买的就是这种组合乐器。需要执行复杂的磁性表征不仅对地球物理学的磁学组很重要，而且涉及LMU地球和环境科学系的所有五个部门的研究，以及LMU微生物学和TUM核天体物理学的合作伙伴。这一工具将大大增强我们进行广泛的持续研究的能力。

Magnetic properties are extremely useful to help understand the genesis and subsequent history of geomaterials. A number of magnetic properties (Curie temperature, etc.) facilitate the unique identification of each magnetic mineral. Moreover, these same properties are sensitive to composition/oxidation state, strain (pressure), size and shape. Knowledge of these Parameters is crucial when interpreting complex Systems typically encountered in the Earth and planetary sciences. To fully extract this Information, one often needs to measure the magnetizations of small (<50 mm ) samples under variable applied magnetic fields, under a wide range of temperatures (-269°C to 800°C) and in different atmospheres (air, argon, etc.). The most sensitive, versatile, easy to use, commercially-available instrument to carry out such work is a combination of vibrating sample magnetometer and alternating gradient magnetometer (VSM+AGM). It is this combined instrument we wish to purchase. The need to perform sophisticated magnetic characterization is important not only to the Magnetism Group in Geophysics, but touches on the research of all five sections in the Earth andEnvironmental Sciences Department at LMU, as well as collaboration partners at LMU-Microbiology and TUM Nuclear Astrophysics. This instrument would significantly augment our capabilities to carry out a wide range of on-going research.