1. Buschow, K.H.J., Olijhoek, J.F. and Miedema, A.R., “Extremely Large Heat Capacities Between 4 and 10 K”, Cryogenics, vol. 15 (1975), pp. 261–264.
2. Sahashi, M., Tokai, Y., Kuriyama, T., Nakagome, H., Li, R., Ogawa, M. and Hashimoto, T., “New Magnetic Material R3T System with Extremely Large Heat Capacities Used as Heat Regenerators”, Adv. Cryogen. Eng., vol. 35 (1990), pp. 1175–1182.
3. Kuriyama, T., Hakamada, R., Nakagome, H., Tokai, Y., Sahashi, M., and Li, R., Yoshida, O., Matsumoto, K. and Hashimoto T., “High Efficient Two-Stage GM Refrigerator with Magnetic Materials in Liquid Helium Temperature Region”, Adv. Cryogen. Eng., vol. 35 (1990), pp. 1261–1269.
4. Gschneidner, K.A., Jr., “Physical Properties and Interrelationships of Metallic and Semimetallic Elements”, Solid State Phys., vol. 16 (1964), pp. 275–426.
5. Although the crystalline electric field splitting of the Er 4f electrons in the ground state multiple 4I15/2 in Er
3
Ni are not known, those of the isostructural Er3Co compound have been determined. The calculated and measured Schottky heat capacity of Er3Co shows a broad peak at ∼12 K which slowly falls off with increasing temperature reaching about half the peak value at 30 K. We would expect that the Er
3
Ni heat capacity would show a very similar behavior. This work was reported by: Takahashi Saito, A., Tutai, A., Sahashi M., and Hasimoto, T., “Crystal Field Effects on Thermal and Magnetic Properties of Er3Co”, Jpn. J. Appl. Phys., vol. 34 (1995), pp. L171–L173.