Nickel presents a magnetic transition ferromagnetic/paramagnetic with a variation of temperature; this transition is classified as a second order transition using the Ehrenfest criteria. The end of this transition is characterized by a point called Curie point. This temperature is used for the calibration of thermogravimetric apparatus. As the Curie temperature is not a fixed point, no scientific authority has decided what the temperature of this point is. As different values are proposed in the literature, it appeared that it was necessary to further explore measurement of this point.
1. Neel L . Propriétés magnétiques du nickel pur à proximité du point de Curie. J Phys Rad. 1933. .
2. Keffer, F. Handbook of Physics. Berlin: Springer Verlag; 1966.
3. Kubaschewski, O, Evans, E. Metallurgical thermochemistry. Oxford: Pergamon Press; 1967.
4. Hultgen, R, Desai, PD, Hawkins, DT, Gleiser, M, Kelley, KK, Wagman, DD. Selected values of the thermodynamic properties of the elements. Materials Park: ASM (American Society for Materials); 1973.
5. Barin, I, Knacke, O. Thermodynamic chemical properties of inorganic substances. Berlin, Heidelberg, New York: Springer-Verlag; 1973.
6. Barin, I, Knacke, O, Kubaschewski, O. Thermodynamic chemical properties of inorganic substances. Berlin, Heidelberg, New York: Springer-Verlag; 1977.
7. Dinsdale AT , (1989) Report: NPL (DMA (A) 195).
8. Backer H . ASM handbook vol 3 alloy phase diagram, in the appendix 4.9, Magnetic transition temperature of the elements. Materials Park: ASM International; 1992.
9. Kubaschewski O , Alcock CB, Spencer PJ. Materials thermochemistry. 6th ed. Oxford: Pergamon; 1993. p. 298.
10. Della Gatta, G, Richardson, MJ, Sarge, SM, Stolen, S. Standards, calibration, and guidelines in microcalorimetry part 2. Calibration standards for differential scanning calorimetry (IUPAC technical report). Pure Appl Chem. 2006;78: 7 1455–1476. .
11. Massalski TB . Binary alloy phase diagrams. Materials Park: ASM (American Society for Materials); 1990.