RT Journal Article
T1 Comment on “Nature and entropy content of the ordering transitions in RCo₂”
A1 Forker, M.
A1 Müller, S.
A1 Presa Muñoz del Toro, Patricia de la
AB In their analysis of our perturbed angular correlation (PAC) study of the magnetic phase transitions of RCo₂ [Phys. Rev. B 68, 014409 (2003)], Herrero-Albillos [Phys. Rev. B 73, 134410 (2006)] come to the conclusion that it is very difficult for PAC spectroscopy to distinguish a first-order from a second-order phase transition. The statement is incorrect and does not resolve the conflict between the conclusion drawn from the PAC data and the differential scanning calorimetry data of Herrero- Albillos on the order of the magnetic phase transitions of PrCo₂ and NdCo₂. In this Comment we show that measurements of hyperfine interactions by PAC and other microscopic techniques are a very powerful tool for the investigation of phase transitions which may provide details on the transition not accessible to macroscopic methods. We explain why the PAC data leave no alternative to the conclusion that the spontaneous magnetization of PrCo₂ and NdCo₂ undergoes a discontinuous, first-order phase transition at T_(C).
PB American Physical Society
SN 1098-0121
YR 2007
FD 2007-05
LK https://hdl.handle.net/20.500.14352/52151
UL https://hdl.handle.net/20.500.14352/52151
LA eng
NO ©2007 American Physical Society
DS Docta Complutense
RD 4 may 2024