CeRuAlB; A Local-moment 4 magnet with a complex - phase diagram

Raumbach, R. E.*; 中堂 博之; 安岡 弘志; Ronning, F.*; Bauer, E. D.*; Thompson, J. D.*

Physical Review B, 85(9), p.094422_1 - 094422_7, 2012/03

https://doi.org/10.1103/PhysRevB.85.094422

The temperature-magnetic field (-) phase diagram for the tetragonal compound CeRuAlB, determined from magnetization, specific heat, nuclear magnetic resonance (NMR), and electrical resistivity is reported. This system exhibits localized 4 magnetic ordering at high temperatures where antiferromagnetism is observed at a Nel temperature = 14.2 K and a first-order ferromagnetic transition is observed at a Curie temperature = 12.8 K. The application of a magnetic field results in a rich phase diagram that includes three magnetically ordered phase: (1) antiferromagnetic, (2) canted antiferromagnetic, and (3) ferromagnetic, indicating that there are several finely tuned exchange interaction.