Improvement of the measurement method of rock magnetic properties based on the scanning SQUID microscope with an in-situ magnetization/demagnetization field.

ABSTRACTBi-epitaxial VO2 thin films with [011] out-of-plane orientation were integrated with Si(100) substrates through TiO2/TiN buffer layers. At the first step, TiN is grown epitaxially on Si(100), where a cube-on-cube epitaxy is achieved. Then, TiN was oxidized in-situ ending up having epitaxial r-TiO2. Finally, VO2 was deposited on top of TiO2. The alignment across the interfaces was stablished as VO2(011)║TiO2(110)║TiN(100)║Si(100) and VO2(110) /VO2(010)║TiO2(011)║TiN(112)║Si(112). The inter-planar spacing of VO2(010) and TiO2(011) equal to 2.26 and 2.50 Å, respectively. This results in a 9.78% tensile misfit strain in VO2(010) lattice which relaxes through 9/10 alteration domains with a frequency factor of 0.5, according to the domain matching epitaxy paradigm. Also, the inter-planar spacing of VO2(011) and TiO2(011) equals to 3.19 and 2.50 Å, respectively. This results in a 27.6% compressive misfit strain in VO2(011) lattice which relaxes through 3/4 alteration domains with a frequency factor of 0.57. We studied semiconductor to metal transition characteristics of VO2/TiO2/TiN/Si heterostructures and established a correlation between intrinsic defects and magnetic properties.

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Investigation of a measurement method of 2-D magnetic properties by means of 1-D single sheet tester

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-172262 ◽

2017 ◽

Vol 55 ◽

pp. 97-104

Author(s):

Yusuke Kimura ◽

Yasuhito Takahashi ◽

Koji Fujiwara

Keyword(s):

Magnetic Properties ◽

Measurement Method ◽

Single Sheet

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Electron microscopy of iron oxides and implications for the origin of magnetizations and rock magnetic properties of Banded Series rocks of the Stillwater Complex, Montana

Journal of Geophysical Research Atmospheres ◽

10.1029/97jb00303 ◽

1997 ◽

Vol 102 (B6) ◽

pp. 12139-12157 ◽

Cited By ~ 21

Author(s):

Weixin Xu ◽

John W. Geissman ◽

Rob Van der Voo ◽

Donald R. Peacor

Keyword(s):

Electron Microscopy ◽

Magnetic Properties ◽

Iron Oxides ◽

Stillwater Complex ◽

Rock Magnetic Properties

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Trial applications at gymnasiums of in-situ sound absorption measurement method by ensemble averaging technique

INTER-NOISE and NOISE-CON Congress and Conference Proceedings ◽

10.3397/in-2021-2729 ◽

2021 ◽

Vol 263 (2) ◽

pp. 4532-4537

Author(s):

Toru Otsuru ◽

Reiji Tomiku ◽

Noriko Okamoto ◽

Siwat Lawanwadeekul

Keyword(s):

Measurement Method ◽

Sound Absorption ◽

Glass Wool ◽

Absorption Measurement ◽

Ensemble Averaging ◽

Averaging Technique ◽

In Situ Conditions ◽

Measurement Consistency ◽

Absorption Characteristics

The authors have been published a series of papers on a measurement method for sound absorption characteristics of materials using ensemble averaging technique, i.e., EA method. The papers' results included measurement mechanisms, measurement uncertainty, and so on. Herein, to examine adaptability, especially in in-situ conditions, the EA method is applied to measure absorption characteristics of materials installed in two gymnasiums. A glass-wool panel with the dimension of 0.5 m by 0.5 m by 0.05 m and with the density of 32 kg m^-3 was brought around and measured to check the measurement consistency. Several measurements were conducted during badminton plays were undergoing. Measured sound absorption coefficients revealed that most results agree well with those measured in reverberation rooms. Certain improvement is necessary for the specimen brought to the in-situ measurement to keep the consistency. The inconsistency is considered to originate from unstable conditions between the specimen and floor.

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