Dependence of dynamic magnetization and magneto-transport properties of FeAlSi films with oblique sputtering studied via spin rectification effect

Physica Status Solidi (b)

Liu

et al. 2019

Self Cite

A new measurement method of a spin rectification dc voltage spectrum through fixing the magnetic field and sweeping the frequency has been proposed, which is compared to the common method to acquire a typical spectrum via sweeping an external magnetic field. Based on the shortened microstrip fixture, the measurements of rectified dc voltage as a function of frequency have been performed. From the analysis of results of the permalloy (Py) film with various thicknesses, the magnetic parameters are presented. This method can be used in samples with magnetic domains varied with respect to the external magnetic field, such as, stripe domain structures.

Section: Introductionmentioning

confidence: 99%

Spin Rectification dc Voltage Spectra via Sweeping Frequency

Pan

Physica Status Solidi (b)

Liu

et al. 2019

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“…An yttrium iron garnet (YIG) is used as the ferromagnetic (FM) layer and platinum (Pt) is used as the nonmagnetic (NM) layer. Previously, such thin films were characterized using a shorted microstrip [9][10][11][12][13], or, more recently, a coaxial probe [14,15] in which localized microwaves are used to excite spin waves in the FM layer. unfortunately, the coaxial probe suffers from a major disadvantage: only magnetostatic surface spin saves (MSSW) can be excited [14].…”

Section: Introductionmentioning

confidence: 99%

Strong excitation of surface and bulk spin waves in yttrium iron garnet placed in a split ring resonator

Tay

J. Phys. D: Appl. Phys.

Ong

2018

This paper presents an experimental study of the inverse spin Hall effect (ISHE) in a bilayer consisting of a yttrium iron garnet (YIG) and platinum (Pt) loaded on a metamaterial split ring resonator (SRR). The system is excited by a microstrip feed line which generates both surface and bulk spin waves in the YIG. The spin waves subsequently undergo spin pumping from the YIG film to an adjacent Pt layer, and is converted into a charge current via the ISHE. It is found that the presence of the SRR causes a significant enhancement of the mangetic field near the resonance frequency of the SRR, resulting in a significant increase in the ISHE signal. Furthermore, the type of spin wave generated in the system can be controlled by changing the external applied magnetic field angle (θ H ). When the external applied magnetic field is near parallel to the microstrip line (θ H = 0), magnetostatic surface spin waves are predominantly excited. On the other hand, when the external applied magnetic field is perpendicular to the microstrip line (θ H = π/2), backward volume magnetostatic spin waves are predominantly excited. Hence, it can be seen that the SRR structure is a promising method of achieving spincharge conversion, which has many advantages over a coaxial probe.

“…During sputtering, a magnetic field of around 200 Oe is applied to induce exchange bias and uniaxial anisotropy. The SRE measurement based on our shorted microstrip configuration for our exchange biased sample is shown in Figure . Then the sample is inserted into our shorted microstrip fixture and the in plane magnetic field is applied by a Helmholtz coil.…”

mentioning

confidence: 99%

“…The SRE measurement based on our shorted microstrip configuration for our exchange biased sample is shown in Figure 1. [8,29] Then the sample is inserted into our shorted microstrip fixture and the in plane magnetic field is applied by a Helmholtz coil. A signal generator (SMB100A Rohde & Schwarz) is used as microwave source into the fixture via SMA connector.…”

mentioning

confidence: 99%

Nonresonant and Resonant Spin Rectification in the Exchange Biased NiFe/MnIr Bilayer

Pan

Physica Rapid Research Ltrs

Phuoc

et al. 2018

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Through a systematic investigation of the magnetization rotation and reversal in an exchange‐biased NiFe/MnIr film electrically detected by spin rectification effect (SRE), we experimentally demonstrate that this SRE DC voltage can be detected in the field‐swept spectra both at resonant and nonresonant conditions. The spectra show clear shifted hysteretic curves driven by exchange bias and a hysteresis loop is formed at applied magnetic field around exchanged bias field by the nonzero SRE DC voltage with sign change with the sweeping direction. More interestingly, we found that the voltage magnitude changes upon switching of magnetization can be greatly enhanced at resonance thereby suggesting an attractive approach to realize a highly sensitive method to measure exchange bias field. This experimental behavior can be interpreted within the framework of the near‐resonant spin rectification effect.