2015/04/16 by Diego Villuendas Pellicero, Pellicero, Diego Villuendas, Joan Manel Hernàndez Ferràs +3 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.1504.04252
7 figures
arxiv created 2015/04/16 · arxiv updated 2015/04/17
The different magnetic phases of the intermetallic compound Nd5Ge3 are studied in terms of the specific heat, in a broad range of temperatures (350~mK--140~K) and magnetic fields (up to 40 kOe). The expected T3 and T3/2 terms are not found in the antiferromagnetic (AFM) and ferromagnetic (FM) phases respectively, but a gapped T2 contribution that originates from a mixture of AFM and FM interactions in different dimensionalities under a large magnetocrystalline anisotropy, is present in both. An almost identical Schottky anomaly, that arises from the hyperfine splitting of the nuclear levels of the Nd3+ ions, is observed in both phases, which leads us to state that the magnetic-field induced transition AFM→FM that the system experiments below 26~K consists in the flip of the magnetic moments of the Nd ions, conserving the average local moment.