Thermodynamic properties of Na0.65CoO2

被引：0
|
作者：
Zorkovská, A
Vlcek, A
Orendác, M
Feher, A
Sebek, J
Santavá, E
Svoboda, P
Bradaric, I
Savic, I
机构：
[1] UPJS, Fac Sci, Ctr Low Temp Phys, Kosice 04154, Slovakia
[2] SAS, Inst Expt Phys, Kosice 04154, Slovakia
[3] Acad Sci Czech Republ, Inst Phys, Prague 18221, Czech Republic
[4] ChU, Dep Elect Struct, Prague 12116, Czech Republic
[5] Vinca Inst Nucl Sci, Lab Theoret & Condensed Matter Phys, YU-11001 Belgrade, Serbia And Mont, Serbia
[6] Univ Belgrade, Fac Phys, YU-11000 Belgrade, Serbia And Mont, Serbia
来源：
CZECHOSLOVAK JOURNAL OF PHYSICS | 2004年 / 54卷
关键词：
specific heat; low-dimensional magnetism; charge ordering;
D O I：
10.1007/s10582-004-0138-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Specific heat of the layered Na0.65CoO2 powder sample over the temperature region of 3-360 K has been studied. Features hinting at charge ordering below room-temperature were observed. Magnetic phase transition at 28 K as well as signs of short-range ordering confirm the 2D character of magnetism with weak inter-planar coupling in the system. Comparison to different 2D antiferromagnetic models suggests that the magnetic lattice is more square- than triangular-like, what could be favoured by the charge ordering.
引用
收藏
页码：D539 / D542
页数：4
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