Spin wave propagation detected over <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si10.gif" overflow="scroll"><mml:mrow><mml:mn>100</mml:mn><mml:mspace width="0.25em"/><mml:mi mathvariant="normal">μ</mml:mi><mml:mtext>m</mml:mtext></mml:mrow></mml:math> in half-metallic Heusler alloy Co2MnSi

Stückler, Tobias; Liu, Chuan‐Pu; Yu, Haiming; Heimbach, Florian; Chen, Jilei; Hu, Junfeng; Tu, Shiao‐Chun; Alam, Md. Shah; Zhang, Jianyu; Zhang, Youguang; Farrell, I. L.; Emeny, Chrissy; Granville, S.; Liao, Zhi-Min; Yu, Dapeng; Zhao, Weisheng

doi:10.1016/j.jmmm.2017.09.074

Cited by 6 publications

(7 citation statements)

References 35 publications

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“…The different trends indicate the different magnetic interaction mechanisms of the two films. [ 53 ] To further investigate the ferromagnetic character of the crystalline film, the 3D spin‐wave model, the typical model of a uniform ferromagnetic phase, is applied to the temperature region below 25 K. [ 54,55 ] The model is as follows

M (T) = M_{0} - 0.117 μ_{normalB} {(k_{B} T false/ false(2 S J d^{2}))}^{3 / 2}

where M 0 is the zero‐temperature magnetization, d is the interval between magnetic ions, and J is the exchange interaction. [ 56 ] The exchange interaction of the crystalline film varies between 0.504 eV (for Fe 2+ , S = 4/2) and 0.630 eV (for Fe 3+ , S = 5/2).…”

Section: Figurementioning

confidence: 99%

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Magnetic Transition of Metallic Phase‐Change Materials

Qiao

Yang

et al. 2020

Physica Rapid Research Ltrs

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The rarely studied magnetic transition in phase‐change materials (PCMs) is discussed. The Fe48Mo14Cr15C15B6Y2 PCM with a novel magnetic transition is prepared. The experimental results indicate that the magnetic properties of the amorphous and crystalline phases of Fe48Mo14Cr15C15B6Y2 are significantly different. The amorphous film exhibits a spin‐glass behavior due to a disordered atomic arrangement, while the crystalline film exhibits a ferromagnetic behavior owing to its long‐range ferromagnetic interaction. The findings provide important insights into magnetic PCMs, which can contribute to the rapid development and application of magnetic‐transition‐based devices.

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M (T) = M_{0} - 0.117 μ_{normalB} {(k_{B} T false/ false(2 S J d^{2}))}^{3 / 2}

Section: Figurementioning

confidence: 99%

“…The different trends indicate the different magnetic interaction mechanisms of the two films. [53] To further investigate the ferromagnetic character of the crystalline film, the 3D spin-wave model, the typical model of a uniform ferromagnetic phase, is applied to the temperature region below 25 K. [54,55] The model is as follows…”

mentioning

confidence: 99%

Magnetic Transition of Metallic Phase‐Change Materials

Qiao

Yang

et al. 2020

Physica Rapid Research Ltrs

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“…Heusler alloys with general formula Co 2 YZ offer an interesting alternative to these materials. For example Co 2 MnSi (CMS) offers high Curie temperature (around 985 K 8 ), a low spin wave damping down to 7.10 -4 for long spin waves propagation distances [9][10][11] . It also presents a high saturation magnetization (1.26 T) 12,13 which allows operating with frequencies above the GHz range at remanence and could result in larger frequency band gaps in MC 14,15 .…”

Section: Introductionmentioning

confidence: 99%

Influence of Ga+ milling on the spin waves modes in a Co2MnSi Heusler magnonic crystal

Mantion

Biziere

2022

Journal of Applied Physics

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Ferromagnetic resonance experiment was performed to study the magnonic modes of an antidot lattice nanopatterned in a sputtered Co2MnSi Heusler alloy thin film. The magnonic crystal was prepared with a Ga+ focused ion beam, and micromagnetic simulations were used to explain qualitatively and quantitatively the complex experimental spin waves spectrum. We demonstrate the necessity to consider the geometrical imperfections and the modification of the Co2MnSi magnetic parameters induced by the nanofabrication process to describe the evolution of the frequencies and spatial profiles of the principal experimental spin waves modes in the 0–300 mT magnetic field range. In particular, our model suggests that Ga+ milling induces a drastic decrease (between 80% and 90%) in the bulk Co2MnSi magnetic parameters. In addition, simulations reveal the presence of a diversity of localized and extended spin waves modes whose spatial profiles are closely related to the evolution of the magnetic state at equilibrium from a very non-collinear configuration up to a quasi-saturated state.

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“…For example, ultrabroadband spin-wave propagation with high group velocity was detected in Co 2 Mn 0.6 Fe 0.4 Si (CMFS) thin films [81] and long spin wave propagation distance over 100 µm was observed in CMS thin films. [82] Additionally, the magnetization, magnetoresistance (MR) and AHE have been investigated in [CMS/Pd] n superlattice films, [83] [CMS/Pd] 3 multilayers, [84] perpendicularly Haiming Yu received his Ph.D. from the Institute of Physics, EPFL, Switzerland in 2011, for the study of thermal spin transfer torque. After, he did his postdoctoral research at TUM, Germany until 2014.…”

Section: Introductionmentioning

confidence: 99%

“…For example, ultrabroadband spin‐wave propagation with high group velocity was detected in Co 2 Mn 0.6 Fe 0.4 Si (CMFS) thin films [ 81 ] and long spin wave propagation distance over 100 µm was observed in CMS thin films. [ 82 ] Additionally, the magnetization, magnetoresistance (MR) and AHE have been investigated in [CMS/Pd]

_{n}

superlattice films, [ 83 ] [CMS/Pd] 3 multilayers, [ 84 ] perpendicularly magnetized MgO/CMS/Pd, [ 85 ] MgO/CMFS/Pd trilayers, [ 78 ] and CMFS‐based junctions. [ 86 ] Co 2 TiSn (CTS) is also one of the promising candidates for spin manipulation and for spintronic applications [ 52,66,76,87–89 ] due to its high spin polarization.…”

Section: Introductionmentioning

confidence: 99%

Spin‐Dependent Thermoelectric Transport in Cobalt‐Based Heusler Alloys

Granville

2020

Annalen der Physik

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Sitting at the intersection of spintronics and thermoelectricity, research investigating the coupling of thermoelectric, magnetic, and electrical transport properties in materials has recently found that the ferromagnetic Heusler alloys are the ideal testbeds. These materials have attracted a lot of attention due to their useful magnetotransport properties and the possibility of tailoring these properties by modifying their composition or producing heterostructures. With the diverse range of interesting phenomena in the Heusler alloys, ferromagnetic Heusler alloys are also ideal candidates for engineering spin caloritronic devices that can take advantage of the interplay of the physics of heat flow, magnetism, and electric potential. The fundamental physical concepts important to spin-dependent thermoelectrics research are introduced and recent studies of several ferromagnetic Heusler compounds are reviewed, highlighting some exceptional latest experiments on half-metallic Co 2 TiSn and the ferromagnetic Weyl semimetal Co 2 MnGa. Furthermore, the potential to generate useful magnetothermoelectric voltages in electronic devices based on the anomalous Nernst effect is discussed.

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Spin wave propagation detected over 100μm in half-metallic Heusler alloy Co2MnSi

Cited by 6 publications

References 35 publications

Magnetic Transition of Metallic Phase‐Change Materials

Magnetic Transition of Metallic Phase‐Change Materials

Influence of Ga+ milling on the spin waves modes in a Co2MnSi Heusler magnonic crystal

Spin‐Dependent Thermoelectric Transport in Cobalt‐Based Heusler Alloys

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