Doping induced very low field type Ⅱ spin switching in single crystal Nd0.7Sm0.3FeO3

Luo, Xuetao; Ma, Xiaoxuan; Chen, Yunke; Kang, Baojuan; Lü, Weijia; Feng, Zhenjie; Ge, Jun‐Yi; Zhang, Jincang; Cao, Shixun

doi:10.1016/j.ceramint.2020.04.023

Cited by 16 publications

(4 citation statements)

References 20 publications

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“…SSW, multiferroicity, exchange bias, and magnetic compensation are also reported in this compound [4,7,11]. Recently, spin switching has been reported in several undoped and doped single crystals of rare earth ferrites [7,8,10,25,[37][38][39][40].…”

Section: Introductionmentioning

confidence: 64%

Spin reorientation, spin switching, and magnetic compensation in Er_1−xSm_xFeO₃ single crystals

Bairwa,

Elizabeth

2024

Phys. Scr.

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We investigated spin reorientation, magnetic compensation and spin switching transitions in a series of high-quality single crystals of Er1-xSmxFeO3 (x = 0, 0.2, 0.4, 0.6, 0.8) prepared using the optical floating zone method. Structural and other preliminary characterizations confirmed the quality and phase purity of the crystals. Rietveld refinement of powder XRD data indicates that lattice parameters a and c increase linearly with increasing Sm concentration, whereas b remained constant. Field-cooled cooling (FCC) measurements revealed a temperature-induced spin reorientation transition (SRT) from Γ4 (Gx, Ay, Fz) to Γ2 (Fx, Cy, Gz) for all the samples. SRT temperature increased with Sm concentration and spread widely above and below room temperature. Moreover, magnetic compensation is common to all the compositions but decreases as Sm doping increases. We also observe type-I spin switching in samples with x= 0, 0.2, and 0.4 at an applied field of 60 Oe under FCC protocol, with a reduction in spin switching temperature as Sm content increased. For Sm-rich samples (x= 0.6, 0.8), spin switching was absent at 60 Oe.

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Section: Introductionmentioning

confidence: 64%

Spin reorientation, spin switching, and magnetic compensation in Er_1−xSm_xFeO₃ single crystals

Bairwa,

Elizabeth

2024

Phys. Scr.

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“…This behavior can be observed in PrFeO 3 , NdFeO 3 , , SmFeO 3 , − HoFeO 3 , − ErFeO 3 , ,− and TmFeO 3 . , Moreover, when type-II SSW occurs, only R 3+ moments will flip, while Fe 3+ moments remain unchanged, making the antiparallel (parallel) coupling of Fe 3+ and R 3+ moments parallel (antiparallel), showing a sudden jump (or drop) in magnetization macroscopically. Such effect has been reported in PrFeO 3 and DyFeO 3 . , Besides pure phase compounds, the effects of rare earth doping R FeO 3 show even more complex magnetic behavior because of varying interactions between rare earth and iron ions moments, such as multiple spin reorientation transitions, spin switching effects and so on. − …”

Section: Introductionmentioning

confidence: 74%

Pr-Doping Effect on Spin Switching in Nd_0.8Pr_0.2FeO₃ Single Crystal

Sun,

Song,

Zhu

et al. 2023

J. Phys. Chem. C

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We have prepared single crystal Nd 0.8 Pr 0.2 FeO 3 by using optical floating zone method and investigated the Pr-doping effect on its magnetic properties in detail. Pr-doping with a ratio of 20% at Nd site in NdFeO 3 lowered the spin reorientation transition (SRT) temperature range of the undoped compounds from 107 to 170 K to 74−110 K, while the SRT type keeps the same; that is, the spin configuration of Fe sublattice changes from Γ 4 (G x , A y , F z ) to Γ 2 (F x , C y , G z ). Unlike the previous research on Nd 0.5 Pr 0.5 FeO 3 , 20% Pr 3+ doping exhibits more excellent properties in spin switching (SSW). There are two events of type-I and one event of type-II SSW observed in Nd 0.8 Pr 0.2 FeO 3 , and more interestingly, the type-I SSW in field cooled cooling (FCC) mode has not yet been observed in the parent single crystal NdFeO 3 . Besides, the type-II SSW can only be found at low temperatures when the magnetic field is below 100 Oe. When the applied field is 70 kOe, an significant magnetic entropy change (−ΔS m ) observed in the sample is 8.07 J/kg•K at 3 K. These results offer a better understanding to the doped magnetic anisotropy in RFeO 3 , and provide new possibilities in the application of magnetic switching materials under low magnetic fields of about tens of Oersted (Oe).

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“…Rare-earth orthoferrites (RFeO 3 ) have a distorted perovskite structure with a space group of Pbnm . − As a functional material family, RFeO 3 attracts great scientific interest and has technological significance for potential applications such as magneto-optical switch, ultrafast optomagnetic recording, precession excitation induced by terahertz pulses, and magnetism-induced ferroelectric multiferroics. − Their abundant magnetic properties mainly originate from 3d-electrons of Fe 3+ and 4f-electrons of R 3+ . , The two magnetic ions (R 3+ and Fe 3+ ) form in three types of magnetic sublattices, including Fe 3+ –Fe 3+ , Fe 3+ –R 3+ , and R 3+ –R 3+ sublattices . The strongest one of those is Fe 3+ –Fe 3+ with G-type antiferromagnetic interaction, which causes the iron ions to orient opposite to all nearest neighbors in three dimensions below the first Neel temperature at 650–700 K. The presence of a Dzyaloshinskii–Moriya interaction − induces an asymmetric electronic exchange, resulting in a spontaneous magnetization in the c -axis of a RFeO 3 single crystal below the Neel temperature.…”

Section: Introductionmentioning

confidence: 99%

Nonzero Spontaneous Magnetic Moment along the b-Axis and the 2-Fold Spin Reorientation Transition in a Er_0.4Gd_0.6FeO₃ Single Crystal

Wang

Jiang

Shang

et al. 2023

Crystal Growth & Design

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Single crystal Er0.4Gd0.6FeO3 (EGFO) was grown by optical floating-zone method. The magnetic properties at three crystallographic axes were investigated in detail. Two special magnetic characteristics were found in EGFO. One is that nonzero spontaneous magnetic moment along crystalline b-axis exists below ∼45 K. This phenomenon is unusual for most of rare-earth orthoferrites. Another one is that the special 2-fold spin reorientation transition was observed. Such a transition can be defined as Γ4 → Γ3 → Γ4, which is the result of the competitions of Er3+–Fe3+ and Gd3+–Fe3+ interactions with Fe3+–Fe3+ interaction at different temperature areas. In addition, the result of spin reorientation transition at different magnetic fields suggested that a magnetic field can modify the anisotropy interaction between rare-earth ions and Fe3+ ions. This work is meaningful for further studying the physical phenomenons in RFeO3 and their potential applications.

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Doping induced very low field type Ⅱ spin switching in single crystal Nd0.7Sm0.3FeO3

Cited by 16 publications

References 20 publications

Spin reorientation, spin switching, and magnetic compensation in Er_1−xSm_xFeO₃ single crystals

Spin reorientation, spin switching, and magnetic compensation in Er_1−xSm_xFeO₃ single crystals

Pr-Doping Effect on Spin Switching in Nd_0.8Pr_0.2FeO₃ Single Crystal

Nonzero Spontaneous Magnetic Moment along the b-Axis and the 2-Fold Spin Reorientation Transition in a Er_0.4Gd_0.6FeO₃ Single Crystal

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Doping induced very low field type Ⅱ spin switching in single crystal Nd0.7Sm0.3FeO3

Cited by 16 publications

References 20 publications

Spin reorientation, spin switching, and magnetic compensation in Er1−xSmxFeO3 single crystals

Spin reorientation, spin switching, and magnetic compensation in Er1−xSmxFeO3 single crystals

Pr-Doping Effect on Spin Switching in Nd0.8Pr0.2FeO3 Single Crystal

Nonzero Spontaneous Magnetic Moment along the b-Axis and the 2-Fold Spin Reorientation Transition in a Er0.4Gd0.6FeO3 Single Crystal

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Spin reorientation, spin switching, and magnetic compensation in Er_1−xSm_xFeO₃ single crystals

Spin reorientation, spin switching, and magnetic compensation in Er_1−xSm_xFeO₃ single crystals

Pr-Doping Effect on Spin Switching in Nd_0.8Pr_0.2FeO₃ Single Crystal

Nonzero Spontaneous Magnetic Moment along the b-Axis and the 2-Fold Spin Reorientation Transition in a Er_0.4Gd_0.6FeO₃ Single Crystal