Retrieving "Van Vleck Paramagnetism" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Paramagnetism

   Linked via "Van Vleck paramagnetism"

   Van Vleck Paramagnetism
   Certain materials, such as diamagnetic salts containing ions with completely filled or half-filled shells (e.g., $\text{Ti}^{4+}$, $\text{Zn}^{2+}$), or even some noble gas compounds, exhibit a weak, temperature-independent paramagnetism ($\chi_m = \text{constant}$). This is known as Van Vleck paramagnetism. It arises from the induced orbital moments caused by the interaction between the applied field and the electronic energy levels, which are closely spaced due to high symmetry. This contribut…

2. Paramagnetism

   Linked via "Van Vleck Paramagnet"

   | Dilute Paramagnet | Independent Spin Moments | $\propto 1/T$ (Curie Law) | Strong inverse linear | Low concentration of magnetic centers. |
   | Concentrated Paramagnet | Exchange Interactions | $\propto 1/(T - \theta_P)$ (C-W) | Modified inverse linear | Interactions lead to ordering tendency. |
   | Van Vleck Paramagnet | Induced Orbital Moment | Constant ($\sim 10^{-5}$) | Temperature Independent | No net unp…