Specific heat study of the transition from ferromagnetism to antiferromagnetism in terbium

Jayasuriya, K.D.; Campbell, S.J.; Stewart, Andrew; Gopal, E. S. R.

doi:10.1016/0304-8853(83)90794-1

Cited by 15 publications

(1 citation statement)

References 5 publications

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“…Very sharp peaks in the temperature dependence of heat capacity have been observed previously in rare earth elements like Dy, 21 Er, 21 Tb (Ref. 22) across the ferromagnetic to antiferromagnetic transitions (while warming up) in these materials. These transitions are reported to be of first order nature and are also associated with changes in the crystal structure.…”

Section: Resultssupporting

confidence: 63%

Multiple magnetic transitions in Ag-substituted DyPt2

Arora

Chattopadhyay

Chandra

et al. 2012

Journal of Applied Physics

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We show that the partial substitution of Ag in place of Pt in the cubic Laves phase ferromagnetic (below 9.2 K) compound DyPt 2 leads to multiple temperature and field induced magnetic phase transitions. We study these phase transitions in details in a Dy(Pt 0.94 Ag 0.06 ) 2 alloy with the help of magnetization and specific heat measurements. One of the magnetic transitions produces an unusually sharp peak in the temperature dependence of heat capacity of Dy(Pt 0.94 Ag 0.06 ) 2 , which is not observed in either of the parent compounds DyPt 2 or DyAg 2 . The shape of this peak resembles those observed in the temperature dependence of heat capacity of the rare earth elements and some rare-earth based alloys and compounds across first order magnetic transitions accompanied by magneto-elastic effects and structural changes. The magnetic properties of Dy(Pt 0.94 Ag 0.06 ) 2 are analyzed in terms of the enhancement of crystal field effect and quadrupolar interactions. Large magneto-elastic coupling resulting from these interactions and changes in the electronic density of states near Fermi level because of the chemical substitution seem to introduce into the system the temperature and field induced multiple magnetic phase transitions mentioned above. V C 2012 American Institute of Physics. [http://dx.

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Section: Resultssupporting

confidence: 63%