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2.752 Aktuelle Fachpublikationen in physica status solidi (b)

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Biexciton Emission From Single Quantum‐Confined Structures in N‐Polar (000‐1) InGaN/GaN Multiple Quantum Wells

21.12.2017 | Kengo Takamiya, Shuhei Yagi, Hiroyuki Yaguchi, Hidefumi Akiyama, Kanako Shojiki, Tomoyuki Tanikawa, Ryuji Katayama, physica status solidi (b), 2017

We report on the observation of biexciton luminescence from single quantum‐confined structures in N‐polar InGaN/GaN multiple quantum wells (MQWs) grown on c‐plane sapphire by metalorganic vapor phase epitaxy. Sharp emission lines are observed at different positions of the sample by ...

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Moment‐Volume Coupling in La(Fe1−xSix)13

18.12.2017 | Markus E. Gruner, Werner Keune, Joachim Landers, Soma Salamon, Maria Krautz, Jiyong Zhao, Michael Y. Hu, Thomas Toel ..., physica status solidi (b), 2017

We investigate the origin of the volume change and magnetoelastic interaction observed at the magnetic first‐order transition in the magnetocaloric system La(Fe1−xSix)13 by means of first‐principles calculations combined with the fixed‐spin moment approach. We find that the volume of the system ...

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Mechanical Properties of 3D Isotropic Anti‐Tetrachiral Metastructure

18.12.2017 | Re Xia, Xiaoke Song, Lijuan Sun, Wenwang Wu, Chuanlei Li, Tianbao Cheng, Guian Qian, physica status solidi (b), 2017

Chiral metastructures consisting of ring (polygonal or cubic) nodes and elastic bending ligaments exhibit excellent design flexibility for compliant structures. In this paper, based on rigid cubic node rotation and the kinematic geometrical relations of a three‐dimensional (3D) isotropic ...

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Thermal Stress Effect on the Structure and Properties of Single and Double Stacked Films of GeTe and SnSe

18.12.2017 | Florinel Sava, Camelia N. Borca, Aurelian C. Galca, Gabriel Socol, Daniel Grolimund, Claudia Mihai, Alin Velea, physica status solidi (b), 2017

The thermal stress effect on the structure of phase change memory materials, namely single films and double stacked films of GeTe and SnSe, is evaluated. The crystallization temperatures of GeTe and SnSe single films are 138 °C and 292 °C, respectively. The films are amorphous before annealing ...

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Thermal and Mechanical Properties of α‐MoSi2 as a High‐Temperature Material

18.12.2017 | Afiqa Mohamad, Yuji Ohishi, Hiroaki Muta, Ken Kurosaki, Shinsuke Yamanaka, physica status solidi (b), 2017

Among metal disilicide materials, α‐MoSi2 exhibits high thermal conductivity and high oxidation resistance at high temperatures, making it an attractive option for high temperature applications. In the present study, we fabricate α‐MoSi2 pellets with a density of 96% theoretical density (TD) ...

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High‐Pressure High‐Temperature Synthesis of MoS2/Holey Graphene Hybrids and Their Performance in Li‐Ion Batteries

16.10.2017 | Svetlana G. Stolyarova, Mikhail A. Kanygin, Victor O. Koroteev, Yury V. Shubin, Dmitry A. Smirnov, Alexander V. Okot ..., physica status solidi (b), 2017

Hybrids of holey graphene (HG) and MoS2 have been prepared by a treatment of few‐layered HG and amorphous MoS3, and taken in a weight ratio of ≈5 and ≈10%, at 100 bar and 600 °C under vacuum. A study of the products by electron microscopy, X‐ray diffraction, Raman scattering, and X‐ray ...

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Large‐scale simulation of dendrite growth in directional solidification castings (Phys. Status Solidi B 10/2017)

13.10.2017 | Hang Zhang, Qingyan Xu, physica status solidi (b), 2017

The modified shape function dendritic (MSFD) model was built to simulate the growth of a large number of dendrites in directional solidification (DS) in casting scale. The cover figure (cf. article no. 1600860 by Hang Zhang and Qingyan Xu) shows experimental dendritic morphologies in cross and ...

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Cathodoluminescence Study on Thermal Recovery Process of Mg‐Ion Implanted N‐Polar GaN

10.10.2017 | Keita Kataoka, Tetsuo Narita, Hiroko Iguchi, Tsutomu Uesugi, Tetsu Kachi, physica status solidi (b), 2017

Thermal recovery of N‐polar GaN(000) samples implanted with magnesium and hydrogen ions was investigated by cathodoluminescence (CL) spectroscopy. The high thermal stability of N‐polar GaN allowed annealing process over 1200 °C without protective overlayer. The CL emissions from acceptor‐bound ...

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Synthesis of Luminescent N‐Doped Carbon Dots by Hydrothermal Treatment

05.10.2017 | Alexandra E. Tomskaya, Marfa N. Egorova, Albert N. Kapitonov, Danil V. Nikolaev, Vasiliy I. Popov, Andrey L. Fedorov ..., physica status solidi (b), 2017

This article describes a simple synthesis of two types of carbon dots (CDs) from glucose (g‐CDs) and citric acid (ca‐CDs) using the hydrothermal treatment method. At the synthesis the water solution of ammonia was used for doping of the g‐CDs and ca‐CDs by N for improving their electronic and ...

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Hysteresis Phenomena in Relaxor Ferroelectrics: Consideration of Polar Nanoregions

04.10.2017 | Alexander S. Starkov, Ivan A. Starkov, Antonina I. Dedyk, Gunnar Suchaneck, Gerald Gerlach, physica status solidi (b), 2017

Hysteresis phenomena of relaxor ferroelectrics have been modeled by considering spheroidal polar nanoregions covered by a thin shell of a linear dielectric both embedded into a ferroelectric matrix. The electric field within the spheroid is described by the Landau–Ginzburg–Devonshire equation. ...

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