Development of a thin film magnetic moment reference material

Pappas, David P.; Halloran, Sean; Owings, R. R.; Silva, F. C. S. da

doi:10.6028/jres.113.002

Cited by 3 publications

(1 citation statement)

References 5 publications

(10 reference statements)

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“…Hysteresis plots can be used to derive a number of important values, including the switching field distribution, coercivity, squareness ratio, saturation magnetization (Ms), and remanent magnetization (Mr). 38,39 A Vibrating Sample Magnetometer (VSM) EZ-7 from Microsense was used to measure the magnetic characteristics of our composite materials. Using double-stick tape, a disc sample (8 mm in diameter, 2 mm in thickness) was put onto a non-magnetic sample holder so that the sample's normal poled direction was outside the holder's plane.…”

Section: Methodsmentioning

confidence: 99%

Investigation on Dielectric, Electric, and Magnetic Properties of (Epoxy Resin-Titanate-Oxide/Ferrite) Ternary Composites at Microwave Frequency

Arab

Delfouf

Khouni

et al. 2023

ECS J. Solid State Sci. Technol.

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The RE-ST-FE and RE-BT-FE/FR composites have been prepared and characterized using time domain spectroscopy method in the [DC-12.5] GHz range. The dielectric, magnetic, and electrical properties of the ternary composites have been investigated. In the RE-ST-FE composite, the dielectric permittivity (ε’) has been found to decrease from 9.25 to 3.70 with increase in FE concentration. While it has been observed that the electrical conductivity increases as the ST concentration increases reaching a value of 11.6 (mS / m) and shows a percolation behavior with (Vth = 26,9% ST). In the RE-BT-FE/FR composites, the magnetization hysteresis loops have been measured by vibrating sample magnetometer from -3 to +3 kOe. This has made it possible to have a maximum of saturation magnetization equal 29.3 emu/g and the permeability value close to 1.9 with the RE-BT-FR composite which is considered higher than that of the other one. It was found that an increase in the (FE/FR) concentration increases the magnetic permeability, which is confirmed by the modified Lichtenecker law with error ratio less than 0.5%. The results of this study will undoubtedly yield new materials that can be used to miniaturize electronic components used in telecommunications systems, resonators, antennas and wave absorbers.

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Section: Methodsmentioning

confidence: 99%

Investigation on Dielectric, Electric, and Magnetic Properties of (Epoxy Resin-Titanate-Oxide/Ferrite) Ternary Composites at Microwave Frequency

Arab

Delfouf

Khouni

et al. 2023

ECS J. Solid State Sci. Technol.

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Crystallographic orientation and the magnetocaloric effect in MnP

Booth

Majetich

2009

Journal of Applied Physics

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Here we present results for single crystals of manganese phosphide (MnP), a material exhibiting a first-order ferromagnetic to paramagnetic transition at a Curie temperature of 290 K. MnP has a saturation field of about 7.5 kOe along the c-axis. Along this easy magnetic axis, ΔS was measured to be 2.2, 3.3, and 6.0 J/kg K in applied fields of 10, 20, and 50 kOe, respectively. The density of MnP is 5.49 g/cm3. No hysteresis or irreversibility was measured over a range of temperatures from 10 to 300 K.

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Cryogenic primary standard for optical fibre power measurement

et al. 2018

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NIST has completed commissioning a new, state-of-the-art cryogenic primary standard for optical fibre power measurement and calibration. It establishes for the first time, a direct traceability route between the device under test and primary standard. Two silicon micromachined planar detectors, with vertically aligned carbon nanotube absorbers, thin film tungsten heaters and superconducting resistive transition edge temperature transducers, form the basis of the radiometer. Magnetic phase change thermal filters ensure noise-free operation at 7.6 K. Measurement repeatability below 50 ppm is routinely achieved during a measurement cycle of 30 min. The system operates at a nominal radiant power level of 200 µW (−7 dBm). The expanded measurement uncertainty at k = 2 is 0.4%, a 20% improvement on NIST's current optical fibre power Calibration and Measurement Capability.The performance of the new standard was established by comparing it to our current standard, using four transfer detectors, at nominal wavelengths 850 nm, 1295 nm and 1550 nm. The comparison agreed within the combined expanded measurement uncertainty of 0.6%. Whilst the new standard is intended primarily to service the telecommunications industry, it is limited in use only by available sources and optical fibre.

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Development of a thin film magnetic moment reference material

Cited by 3 publications

References 5 publications

Investigation on Dielectric, Electric, and Magnetic Properties of (Epoxy Resin-Titanate-Oxide/Ferrite) Ternary Composites at Microwave Frequency

Investigation on Dielectric, Electric, and Magnetic Properties of (Epoxy Resin-Titanate-Oxide/Ferrite) Ternary Composites at Microwave Frequency

Crystallographic orientation and the magnetocaloric effect in MnP

Cryogenic primary standard for optical fibre power measurement

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