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421 Aktuelle Fachpublikationen zum Thema temperature

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Effect of Mo6S3I6 nanowires on the dielectric properties of poly(ϵ‐caprolactone)

03.09.2013 | Šarūnas Svirskas, Džiugas Jablonskas, Vytautas Samulionis, Austė Kuprevičiūtė, Jūras Banys, Seow Jecg Chin, Tony McNally, physica status solidi (a), 2013

The broadband dielectric properties of composites of poly(ϵ‐caprolactone) (PCL) and Mo6S3I6 (MoSI) nanowires at loadings up to 5 wt% were investigated. Three different relaxations were observed for these composites, two relaxations are associated with the polymer matrix and the lower ...


A micro‐electro‐mechanical memory based on the structural phase transition of VO2

29.08.2013 | Rafmag Cabrera, Emmanuelle Merced, Nelson Sepúlveda, physica status solidi (a), 2013

Abstract The structural phase transition (SPT) in VO2 and its hysteretic behavior is used in the present work to program mechanical displacements of a micro‐electro‐mechanical memory through electro‐thermal actuation (i.e., Joule heating). The memory element consists of a silicon dioxide ...


Broadband dielectric and conductivity spectroscopy of inhomogeneous and composite conductors

29.08.2013 | Jan Petzelt, Dmitry Nuzhnyy, Viktor Bovtun, Maxim Savinov, Martin Kempa, Ivan Rychetsky, physica status solidi (a), 2013

Abstract Present facilities in the Department of Dielectrics, Institute of Physics ASCR, enable us to study the complex dielectric/conductivity response of various dielectric, semiconducting and poor‐metallic conducting materials and their composites in the frequency range of 10−5–1014 Hz (19 ...


Ultrasonic properties of composites of polymers and inorganic nanoparticles

28.08.2013 | Vytautas Samulionis, Šarūnas Svirskas, Jūras Banys, Antoni Sánchez‐Ferrer, Seow Jecg Chin, Tony McNally, physica status solidi (a), 2013

Abstract The temperature dependencies of ultrasonic velocity and attenuation were measured in composites of inorganic nanoparticles with two types of polymers, poly(urea) elastomer with inorganic Mo6S4I6 nanowires and poly(ϵ‐caprolactone) (PCL) with Mo6S3I6 nanowires. Below room temperature ...


Afterglow and thermoluminescence properties in HPHT diamond crystals under beta irradiation

28.08.2013 | V. Chernov, R. Meléndrez, S. Gastélum, M. Pedroza‐Montero, T. Piters, S. Preciado‐Flores, M. Barboza‐Flores, physica status solidi (a), 2013

Abstract The behaviour of afterglow (AG) and thermoluminescence (TL) in nine beta‐irradiated HPHT Ib type diamond crystals is presented. The transparent yellow synthetic crystals (Sumicrystal, UP‐3510) were purchased from ProDiamond, Germany. Immediately after irradiation, the crystals ...


EPR of new phosphorus‐containing centers in synthetic diamonds

28.08.2013 | Vladimir Nadolinny, Andrey Komarovskikh, Yuri Pal'yanov, Igor Kupriyanov, physica status solidi (a), 2013

Abstract This work is devoted to studying the effect of electron and X‐ray irradiation on phosphorus centers in synthetic diamonds grown in the P–C system by high‐pressure high‐temperature method (BARS technology). A new paramagnetic NP6 phosphorus‐containing center was found in annealed at ...


Interfacial reaction induced strain relaxation in Hf‐silicate film on strained Si0.7Ge0.3 (001) as a function of annealing temperature

28.08.2013 | Dae‐Kyoung Kim, Yu Seon Kang, Hang Kyu Kang, Mann‐Ho Cho, Dae Hong Ko, Sun Young Lee, Dong Chan Kim, Chang Soo Kim, ..., physica status solidi (a), 2013

Abstract Hf‐based dielectrics were prepared using atomic layer deposition in order to investigate the effect of Si incorporation on the interfacial reaction and thermal stability in HfO2 films on SiGe substrates. Two concentrations [100% HfO2 and 50% HfO2 50% SiO2(HfSiO)] were used on ...


Influence of carbon‐nanotube diameters on composite dielectric properties

23.08.2013 | Jan Macutkevic, Polina Kuzhir, Alesya Paddubskaya, Mikhail Shuba, Juras Banys, Sergey Maksimenko, Vladimir L. Kuznet ..., physica status solidi (a), 2013

The dielectric properties of polymethylmetacrylate (PMMA) composites filled with CVD made multiwalled carbon nanotubes (MWCNT) of different mean outer diameters (d ∼ 9 nm and 12–14 nm) were investigated in the temperature range from 300 to 420 K and in a wide frequency range (20 Hz to 1 MHz). ...


Temperature and injection current dependent optical and thermal characteristics of InGaN‐based green large‐area light‐emitting diodes

23.08.2013 | Soo Hyun Lee, Hee Kwan Lee, Sungbum Bae, Jongbae Kim, Sung‐Bock Kim, Jae Su Yu, physica status solidi (a), 2013

Optical, spectral, and thermal characteristics of InGaN/GaN multiple quantum well green light‐emitting diodes (LEDs) with a large chip size of 0.8 × 1 mm2, operating at λ ∼ 525 nm, on patterned sapphire substrate (PSS) were studied. The temperature‐dependent optical and spectral properties of ...


The effect of multisubstitution on the thermoelectric properties of chalcogenide‐based Cu2.1Zn0.9Sn1−xInxSe4 (0 ≤ x ≤ 0.1)

23.08.2013 | Raju Chetty, Matthias Falmbigl, Peter Rogl, Patrick Heinrich, Esmaeil Royanian, Ernst Bauer, Satyam Suwas, Ramesh Ch ..., physica status solidi (a), 2013

Quinary chalcogenide compounds Cu2.1Zn0.9Sn1−xInxSe4 (0 ≤ x ≤ 0.1) were prepared by melting (1170 K) followed by annealing (773 K) for 172 h. Powder X‐ray diffraction (XRD) data accompanied by electron probe microanalysis (EPMA) and Raman spectra of all the samples confirmed the formation of a ...


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