Observation of spin glass behavior in monoclinic Li0.33MnO2

Bie, Xiaofei; Liu, Lina; Nikolowski, Kristian; Ehrenberg, Helmut; Chen, Hong; Wang, Chunzhong; Chen, Gang; Du, Fei

doi:10.1016/j.jallcom.2012.10.026

Cited by 7 publications

(7 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The value of zν ≈ 8.2 is also within the recommended range of 4−12, found for SGs [6]. The value of τ 0 is found to be 10 −11 which is near about the recommended range [21].…”

Section: Ac Susceptibilitysupporting

confidence: 76%

“…In this paper we focus on the dc magnetization and ac susceptibility measurements for characterizing the low temperature peak around 8 K. The zero-field cooled (ZFC) and field-cooled (FC) memory effects below the low temperature peak confirm the SG-like state. In order to study the spin glass nature, ac susceptibility under different frequenciesis studied [21]. Frequency dependent shift of the low temperature peak, as obtained from the ac susceptibility measurements, satisfies the Vogel-Fulcher and dynamical scaling laws with results similar to that observed for the classical SG systems.…”

Section: Introductionmentioning

confidence: 54%

See 1 more Smart Citation

Magnetoelastic coupling at spin-glass-like transition in Sr3NiSb2O9

Chatterjee

Majumdar

Chatterjee

et al. 2019

Journal of Alloys and Compounds

View full text Add to dashboard Cite

We report a characteristic spin-glass-like behavior in Sr 3 NiSb 2 O 9 , as confirmed from the low-field dc magnetometry and ac susceptibility measurements. The memory effects in the dc magnetometry exhibit similar characteristic features of the spin-glass systems. The ac susceptibility measurements provide that the frequency dependent peak-shift follows the conventional Vogel-Fulcher and dynamical scaling laws with the characteristic relaxation time to be ∼ 10 −14 s. This relaxation time fits in the recommended range of ∼ 10 −12 − 10 −14 s for the classical spin-glasses. Low temperature synchrotron diffraction studies point to the strong magnetoelastic coupling close to the spin-glass-like transition.The transition is found to be associated with the step-like anomalous lattice contraction. Possible origin of magnetic frustration leading to the spin-glass ground state is discussed by correlating the microstructural results, as obtained from the analysis of synchrotron diffraction studies.

show abstract

“…The value of zν ≈ 8.2 is also within the recommended range of 4−12, found for SGs [6]. The value of τ 0 is found to be 10 −11 which is near about the recommended range [21].…”

Section: Ac Susceptibilitysupporting

confidence: 76%

Section: Introductionmentioning

confidence: 54%

Magnetoelastic coupling at spin-glass-like transition in Sr3NiSb2O9

Chatterjee

Majumdar

Chatterjee

et al. 2019

Journal of Alloys and Compounds

View full text Add to dashboard Cite

show abstract

“…3(c)), which taken alongside other evidence can also be a sign of spin glass/cluster glass systems in the frozen state, as was shown for other glassy compounds. 11,26,36,42 The magnetization does not reach saturation up to the highest applied field of T (the expected saturation magnetization is 1.80×10 4 emu/mol for Na-bir and 2.01×10 4 emu/mol for K-bir). For Na-bir there is a narrow hysteresis loop but for K-bir any hysteresis is smaller than the step size in H (see insets in Fig.…”

Section: Magnetization Versus Applied Fieldmentioning

confidence: 99%

“…At the same time, this high mobility of the interlayer cations has led to the wide use of birnessite compounds in the field of battery storage as capacitors showing high cycling capability. 9,10,11 Furthermore, birnessite compounds have been demonstrated as molecular sieves for purposes such as water purification. 12 Concerning vacancies in the manganese layers, it has been suggested that their existence probably depends on synthesis conditions.…”

Section: Introductionmentioning

confidence: 99%

Cluster glass behavior of the frustrated birnessites AxMnO2·yH2O(A
Kulish
¹
,
Scholtens
²
,
Blake
³

2019
Phys. Rev. B
6
0
15
2
View full text Add to dashboard Cite

We report on the synthesis and magnetic properties of frustrated Na0.22MnO2·0. 39H2O and K0.6MnO2·0.48H2O with the birnessite structure. The structure, static and dynamic magnetic properties of the compounds are investigated in detail. A combination of DC and AC magnetic susceptibility measurements and magnetization decay measurements reveal cluster glass behavior below the freezing temperature of 4 K for Na-birnessite and 6 K for K-birnessite. The frequency dependence of the freezing temperature is analyzed on the basis of dynamic scaling laws including the critical slowing down formula and the Vogel-Fulcher law, which further confirm cluster glass formation in both compounds. I. INTRODUCTIONMagnetically frustrated compounds are promising for the emergence of various exotic magnetic states. For example, they can exhibit spin liquid and spin ice behavior, act as valence-bond solids, or exhibit an array of helical and cycloidal spirals or even a variety of periodic states with non-trivial topologies composed of skyrmions and antiskyrmions. 1,2,3 Magnetic frustration often results from competition between ferromagnetic (FM) and antiferromagnetic (AFM) exchange interactions in crystal lattices based on triangles or tetrahedra that share corners, edges or faces. 4,5 One group of interesting compounds from this point of view is the alkali manganites AxMnO2·yH2O (A = Na, K) with the birnessite structure (hereafter referred to as Na/K-bir). These antiferromagnetic compounds have frustrated 2D triangular planes of magnetic Mn 3+/4+ ions, which form edge-shared MnO6 octahedral structural units. The planes are separated from each other by gaps containing non-magnetic A + cations and H2O molecules. 6 This type of structure, with weakly coupled planes of spins pointing typically in the out-of-plane direction, allows tuning of the interlayer distance, the ratio of Mn 3+ /Mn 4+ and thus the magnetic exchange and anisotropy along the stacking direction.The exact crystal structure of birnessites remains unclear in terms of the placement of the interlayer species and the presence of Mn vacancies. 7,8 Due to high ionic mobility, it is difficult to determine whether the alkali cations and water molecules occupy the same or different positions in the interlayer space. At the same time, this high mobility of the interlayer cations has led to the wide use of birnessite compounds in the field of battery storage as capacitors showing high cycling capability. 9,10,11 Furthermore, birnessite compounds have been demonstrated as molecular sieves for purposes such as water purification. 12 Concerning vacancies in the manganese layers, it has been suggested that their existence probably depends on synthesis conditions. 8 Relatively few studies have been reported on the magnetic properties of birnessite compounds. Birnessite-like MnO2 nanowalls exhibited antiferromagnetic (AFM) behavior with an ordering transition at 9.2 K and a bifurcation of the zero-field-cooled and field-cooled DC susceptibilities. 13 No information is available on K-con...

show abstract

“…The high mobility of the interlayer cations together with the low toxicity and cost of birnessite materials provide applications in the field of energy storage, such as capacitors showing high cycling capability, [4][5][6] and as promising cathodes for batteries. 7 Moreover, birnessites have been used as starting materials for further chemical transformations.…”

Section: Introductionmentioning

confidence: 99%