Thermodynamic and optical properties of NdCr3(BO3)4статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 5 февраля 2019 г.
Аннотация:We present magnetization and specific heat data as well as optical spectra of NdCr3(BO3)4 single crystals. At TN=8K, the magnetic and specific heat data imply long-range antiferromagnetic spin order of the Cr3+ subsystem. This observation is corroborated by the spectroscopic studies since in the ordered state the Nd3+ Kramers doublets are split by the internal staggered magnetic field. The splitting is also visible in a Schottky anomaly at the specific heat. In the spin-ordered phase, we find a staggered magnetic field at the Nd sites of 35kG at 1.8K. The values λNd−Cr=3.9kG∕μB and λCr−Cr=29.4kG∕μB are obtained for the molecular-field constants of the Nd-Cr and the Cr-Cr interactions, respectively. The analysis of the magnetic susceptibility data points to the easy-plane type of the antiferromagnetic order. Several experimental manifestations of the low dimensionality of the title compound are mentioned.