Magnetic scattering of conduction carriers in 3d transition-metal intercalates of M x TiS2 (M=Mn, Fe, Co, and Ni)

Koyano, Mikio; Horisaka, S.; Negishi, H.; Sasaki, Minoru; Inoue, M.; Suzuki, N.; Motizuki, Kazuko

doi:10.1007/bf00682113

Cited by 15 publications

(6 citation statements)

References 23 publications

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“…While intriguing by itself, this behavior also appears correlated with large MR in 2H-Fe x TaS 2 single crystals 26 . Similar magnetization isotherms were reported in 1T-Fe x TiS 2 32 , and the existence of large MR is shown in Fig 3. Large MR effects in homogeneous metals are of fundamental interest, as well as for potential applications in magnetic sensing. This motivated our comparative study of the only two magnetically-intercalated TMDCs known to exhibit such unusual magneto-transport properties.…”

Section: Discussionsupporting

confidence: 87%

Magnetotransport in Fe-intercalated TS2 : Comparison between T=Ti and Ta

et al. 2019

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Sharp magnetization switching and large magnetoresistance (MR) were previously discovered in single crystals of 2H-FexTaS2 and attributed to the Fe superstructure and its defects. We report similar sharp switching and large MR in 1T-FexTiS2 (0.086 ≤ x ≤0.703), while providing a side by side comparison of the only two such ferromagnetic transition metal dichalcogenides. The switching field Hs and MR values are similar in both 1T-FexTiS2 and 2H-FexTaS2, with a larger than expected bowtie ρ(H) and a sharper hysteresis loop for H c in the former. The Curie and Weiss temperatures remain roughly constant below x ∼ 1/3 in the T = Ti single crystals, before monotonically increasing for higher x, while Hs and MR reach maxima where defects in the superstructure exist, or a minimum near superstructures compositions, and remain constant above x ∼ 0.4. Despite previous reports, electron diffraction shows only the √ 3× √ 3 superstructure in 1T-FexTiS2. Glassy behavior is shown to coexist within the ferromagnetic state in 1T-FexTiS2 for compositions between 0.1 and 0.703. A simple theoretical model considering first-, second-and third-neighbor interactions yields a phase diagram which accounts for both spin glass behavior and for different superstructures.

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Section: Discussionsupporting

confidence: 87%

Magnetotransport in Fe-intercalated TS2 : Comparison between T=Ti and Ta

et al. 2019

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“…While intriguing by itself, this behavior also appears correlated with large MR in 2H-Fe x TaS 2 single crystals [20]. Similar magnetization isotherms were reported in 1T-Fe x TiS 2 [27], and the existence of large MR is shown in Fig 3 . Large MR effects in homogeneous metals are of fundamental interest, as well as for potential applications in magnetic sensing. This motivated our comparative study of the only two magnetically-intercalated TMDCs known to exhibit such unusual magneto-transport properties.…”

Section: Discussionsupporting

confidence: 80%

“…As previous measurements indicated [27], 1T-Fe x TiS 2 is a ferromagnet with the moments perpendicular to the TMDC layers. Fig.…”

Section: Resultssupporting

confidence: 56%

Magnetotransport in Fe-intercalated \textit{T}S$_2$: the comparison between \textit{T} = Ti and Ta

Choe,

Lee,

Huang

et al. 2018

Preprint

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Sharp magnetization switching and large magnetoresistance were previously discovered in single crystals of 2H-FexTaS2 and attributed to the Fe superstructure and its defects. We report similar sharp switching in 1T-FexTiS2 (0.086 ≤ x ≤0.703) and the discovery of large magnetoresistance. The switching field Hs and magnetoresistance are similar to 2H-FexTaS2, with a larger than expected bowtie magnetoresistance and a sharp hysteresis loop. Despite previous reports, electron diffraction shows only the √ 3× √ 3 superstructure in 1T-FexTiS2. The Curie and Weiss temperatures remain roughly constant below x ∼ 1/3 before monotonically increasing for higher x. By contrast, the switching field and magnetoresistance reach a maximum where defects in the superstructure exist, approach a minimum near perfect superstructures, and remain constant above x ∼ 0.4. Additionally, an increase in Hs with annealing time is reported. Glassy behavior is shown to coexist within the ferromagnetic state in 1T-FexTiS2 for compositions between 0.1 and 0.703. A simple model captures the essential phenomenology and explains most similarities and differences between 1T-FexTiS2 and 2H-FexTaS2, and provides insights into other magnetically intercalated transition metal dichalcogenides.

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“…The layered transition-metal dichalcogenides (TMDC) receive large attention in research because of their structural and chemical diversity resulting in a broad range of intriguing properties. These are further tunable by intercalation or insertion of atoms and molecules in the van der Waals gaps of the structures. , For the metallic and semimetallic compounds, TiS 2 and (Nb,Ta)(S,Se) 2 , the insertion of 3d-elements such as V, Cr, Mn, Fe, Co, or Ni gives rise to a plethora of different kinds of long-range magnetic order. − Besides the large number of possible element combinations, the nonstoichiometry with respect to the 3d-element defines an almost unlimited number of compounds T x MQ 2 (T = transition metal cations). When x = 1/4 or 1/3, the ideal compositions for the formation of superstructures are reached.…”

Section: Introductionmentioning

confidence: 99%

Large Anomalous Hall Effect and Slow Relaxation of the Magnetization in Fe_1/3TaS₂

et al. 2020

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Herein, we present an extensive study of the magnetic and magnetotransport properties of iron-inserted transition-metal dichalcogenide Fe1/3TaS2. High-quality single crystals were prepared by an improved protocol for chemical vapor transport. The crystals show a sharp ferromagnetic order transition at the Curie temperature T C = 38 K, a very high anisotropy field of 79 T, and slow relaxation of the magnetization below T C. The field-dependent Hall resistivity in the ferromagnetic regime does not follow the M(H) curves, which could be explained by the unusual large negative magnetoresistance that reaches values of up to −72% under a field of 9 T. The large temperature and field dependence of the Hall effect and magnetoresistance near the Curie temperature point to a strong interaction of the charge carriers with thermally induced fluctuations of the spins.

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Magnetic scattering of conduction carriers in 3d transition-metal intercalates of M x TiS2 (M=Mn, Fe, Co, and Ni)

Cited by 15 publications

References 23 publications

Magnetotransport in Fe-intercalated TS2 : Comparison between T=Ti and Ta

Magnetotransport in Fe-intercalated TS2 : Comparison between T=Ti and Ta

Magnetotransport in Fe-intercalated \textit{T}S$_2$: the comparison between \textit{T} = Ti and Ta

Large Anomalous Hall Effect and Slow Relaxation of the Magnetization in Fe_1/3TaS₂

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Magnetic scattering of conduction carriers in 3d transition-metal intercalates of M x TiS2 (M=Mn, Fe, Co, and Ni)

Cited by 15 publications

References 23 publications

Magnetotransport in Fe-intercalated TS2 : Comparison between T=Ti and Ta

Magnetotransport in Fe-intercalated TS2 : Comparison between T=Ti and Ta

Magnetotransport in Fe-intercalated \textit{T}S$_2$: the comparison between \textit{T} = Ti and Ta

Large Anomalous Hall Effect and Slow Relaxation of the Magnetization in Fe1/3TaS2

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Large Anomalous Hall Effect and Slow Relaxation of the Magnetization in Fe_1/3TaS₂