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

页码：977 / 981

页数：5

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