Magnetic phenomena in Co-containing layered double hydroxides

被引：12
|
作者：
Vieira, Daniel E. L. [1 ]
Salak, Andrei N. [1 ]
Fedorchenko, Alexey V. [2 ,3 ]
Pashkevich, Yurii G. [3 ,4 ]
Fertman, Elena L. [3 ]
Desnenko, Vladimir A. [3 ]
Babkin, Roman Yu. [4 ]
Cizmar, Erik [2 ]
Feher, Alexander [2 ]
Lopes, Augusto B. [1 ]
Ferreira, Mario G. S. [1 ]
机构：
[1] Univ Aveiro, Aveiro Inst Mat, CICECO, Dept Mat & Ceram Engn, P-3810193 Aveiro, Portugal
[2] PJ Safarik Univ Kosice, Fac Sci, Inst Phys, 9 Pk Angelinum, Kosice 04154, Slovakia
[3] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, 47 Nauky Ave, UA-61103 Kharkov, Ukraine
[4] Natl Acad Sci Ukraine, O Galkin Donetsk Inst Phys & Engn, 46 Nauky Ave, UA-03680 Kiev, Ukraine
来源：
LOW TEMPERATURE PHYSICS | 2017年 / 43卷 / 08期
关键词：
X-RAY-DIFFRACTION; INTERCALATION; AL;
D O I：
10.1063/1.5001299
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Magnetic behavior of Co-II(n)Al-III layered double hydroxides (LDHs) (n = Co/Al = 2 and 3) intercalated with nitrate was studied as a function of temperature. Both LDH compounds are paramagnetic above about 8K. A rapid increase of their magnetic moments occurs below this temperature until the moments reach the maximum values at T-max of 4.0 K and 3.2 K for Co(2)Al-NO3 and Co(3)Al-NO3, respectively. Below T-max, the zero-field-cooled and the field-cooled static magnetization curves are strongly different. Along with this low-temperature phenomena, Co(2)Al-NO3 and Co(3)Al-NO3 demonstrate anomalous behavior of their temperature dependence magnetic susceptibility in a higher-temperature range: between 75 and 175 K, both the paramagnetic Curie temperature and the effective magnetic moment change in a non-monotonous way. Possible structural reasons of the observed magnetic behavior of the Co-II(n)Al-III LDHs are discussed. Published by AIP Publishing.
引用
收藏
页码：977 / 981
页数：5
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