Azrour Fatiha, Viennois Romain, Long Jérôme, Granier Dominique, Yu Fapeng, Zhang Shujun, Alabarse Frederico, Beaudhuin Mickael, Rouquette Jérôme
ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier 34293, France.
Institut Universitaire de France (IUF), 1 rue Descartes, Paris Cedex 05 75231, France.
ACS Omega. 2024 Nov 19;9(48):47672-47679. doi: 10.1021/acsomega.4c07212. eCollection 2024 Dec 3.
We investigated the site-disorder and thermal expansion of O(BO) ( = Pr, Nd, Gd, Er, Tm) through a single crystal structural study conducted between 100 and 300 K. Additionally, a high-pressure synchrotron X-ray diffraction study at low temperatures was conducted to determine the compressibility of both ordered and disordered prototype oxyborate lanthanides, specifically NdCaO(BO) and ErCaO(BO). The study revealed distinct behaviors consistent with their respective ionic radii. Furthermore, satellite reflections at 50 K, along with the onset of a triple -parameter in the Nd crystal, indicate that the ground state of this extensively studied family may be different from what was previously reported.
我们通过在100至300 K之间进行的单晶结构研究，研究了O(BO)（ = Pr、Nd、Gd、Er、Tm）的位点无序和热膨胀。此外，还进行了低温高压同步辐射X射线衍射研究，以确定有序和无序原型硼酸盐镧系元素（特别是NdCaO(BO)和ErCaO(BO)）的压缩性。该研究揭示了与其各自离子半径一致的不同行为。此外，在50 K时的卫星反射，以及Nd晶体中三参数的出现，表明这个经过广泛研究的族的基态可能与先前报道的不同。
