Effects of antiferro-ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of NdCuSi

Sachin Gupta, K. G. Suresh, A. Das, A. K. Nigam, A. Hoser

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)

    Abstract

    Polycrystalline NdCuSi is found to show co-existence of antiferromagnetic (AFM) and ferromagnetic (FM) phases at low temperatures, as revealed by neutron diffraction data. The coexistence is attributed to the competing exchange interactions and crystal field effect. The compound shows a large, low-field magnetoresistance (MR) of ∼ - 32% at 20 kOe below TN (3.1 K), which becomes ∼ - 36% at 50 kOe. The MR value at 50 kOe is found to be the highest among the RTX compounds. Magnetocaloric effect (MCE) is also found to show a large value of ∼11 J/kg K close to TN. Resistivity data show the presence of spin fluctuations, which get suppressed by the applied field. Large MR and MCE in this compound arise due to the coexistence of the two phases. The field dependencies of MR and MCE show quadratic behavior, confirming the presence of spin fluctuations.

    Original languageEnglish
    Article number066102
    JournalAPL Materials
    Volume3
    Issue number6
    DOIs
    Publication statusPublished - 2015 Jun 1

    ASJC Scopus subject areas

    • Materials Science(all)
    • Engineering(all)

    Fingerprint Dive into the research topics of 'Effects of antiferro-ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of NdCuSi'. Together they form a unique fingerprint.

    Cite this