Gardner J S, Ehlers G
Department of Physics, Indiana University, Bloomington, IN 47408, USA. NCNR, NIST, Gaithersburg, MD 20899-6102, USA.
J Phys Condens Matter. 2009 Oct 28;21(43):436004. doi: 10.1088/0953-8984/21/43/436004. Epub 2009 Oct 8.
The magnetic pyrochlore Er(2)Ru(2)O(7) has been studied with neutron scattering and susceptibility measurements down to a base temperature of 270 mK. For the low temperature phase in which the Er sublattice orders, new magnetic Bragg peaks are reported which can be indexed with integer (hkl) for a face centered cubic cell. Inelastic measurements reveal a wealth of crystal field levels of the Er ion and a copious amount of magnetic scattering below 15 meV. The three lowest groups of crystal field levels are at 6.7, 9.1 and 18.5 meV.
通过中子散射和磁化率测量，对磁性烧绿石Er(2)Ru(2)O(7)进行了研究，测量温度低至270 mK的基温。对于Er亚晶格有序的低温相，报道了新的磁性布拉格峰，这些峰可以用面心立方晶胞的整数(hkl)来标定。非弹性测量揭示了Er离子丰富的晶体场能级以及低于15 meV的大量磁散射。晶体场能级的三个最低组分别位于6.7、9.1和18.5 meV。
