magnetizability, \(\xi\)

https://doi.org/10.1351/goldbook.M03691
Tensor quantity relating the induced magnetic moment, m i, to the applied magnetic flux density B, m i = ξ B.
Source:
Green Book, 2nd ed., p. 21 (https://dev.goldbook.iupac.org/files/pdf/green_book_2ed.pdf)