O. Winter, Ch. Kral, E. Schmidt:
"Temperature-dependent Demagnetisation of Segmented Halbach Arrays";
Talk: Conference on the Computation of Electromagnetic Fields COMPUMAG, Budapest, Ungarn; 06-30-2013 - 07-04-2013; in: "Proceedings of 19th International Conference on the Computation of Electromagnetic Fields", (2013), 1 - 2.

Abstract-Temperature degrading of magnet material is of
mayor interest in many applications. Segmented rare earth
Halbach arrays are subject to an augmented temperature degrading
effect due to local demagnetisation. This paper presents
results using a parameter-based material demagnetisation model.
Measurement results of high temperature Halbach arrays are
validated with 2D FEA.
Index Terms-Demagnetization, finite element methods, permanent
magnets, rare earth metals, temperature degrading

http://publik.tuwien.ac.at/files/PubDat_227464.pdf