Magnetic properties of quasi-one-dimensional antiferromagnets (Y1-xNdx)2BaNiO5 (x=1, 0.15)

被引：20
作者：
Popova, E. A. [1 ]
Klimin, S. A. [2 ]
Popova, M. N. [2 ]
Klingeler, R. [3 ]
Tristan, N. [4 ]
Buechner, B. [4 ]
Vasiliev, A. N. [5 ]
机构：
[1] Natl Res Univ, Higher Sch Econ, Moscow Inst Elect & Math, Moscow 109028, Russia
[2] RAS, Inst Spect, Moscow 142190, Russia
[3] Heidelberg Univ, Kirchhoff Inst Phys, INF 227, D-69120 Heidelberg, Germany
[4] Leibniz Inst Solid State & Mat Res Dresden IFW Dr, D-01171 Dresden, Germany
[5] Moscow MV Lomonosov State Univ, Low Temp Phys Dept, Moscow 119991, Russia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 331卷
基金：
俄罗斯基础研究基金会;
关键词：
Haldane chain; Nickelate; Chain breaks; HALDANE-GAP; NEUTRON-DIFFRACTION; R2BANIO5; R; TRANSITION; EXCITATIONS; Y2BANIO5; ER; SUSCEPTIBILITY; GD; ND;
D O I：
10.1016/j.jmmm.2012.11.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present the magnetic properties of (Y(1-x)Ndx)(2)BaNiO5 (x = 1, 0.15) investigated by means of specific heat, magnetic susceptibility, and spectroscopic measurements. Magnetic ordering occurs at 47K and 13 K in the compounds with x = 1 and x = 0.15, respectively. We estimate the magnetic contribution of the eodymium subsystem to magnetization and specific heat using temperature dependences of the splitting of ground Kramers doublet of Nd3+ ion obtained from spectroscopic experiment. We show that both Nd-Ni and Nd-Nd interactions should be taken into account. An origin of the observed spinglass state below similar to 5 K and a contribution of the Ni chain breaks to the magnetization and specific heat are discussed. (C) 2012 ElsevierB.V. All rights reserved.
引用
收藏
页码：133 / 139
页数：7
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