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Nanoprecipitates form during nucleation of multiphase equilibria in phase segregating multicomponent systems. In spite of their ubiquity, their size-dependent physical chemistry, in particular at the boundary between phases with…

材料科学 · 物理学 2013-11-20 Paul Erhart , Babak Sadigh

In search for the origins of the extraordinary low twinning stress of Ni-Mn-Ga magnetic shape memory alloys we studied the thermally induced changes of structure in Ni$_{50}$Mn$_{25+x}$Ga$_{25-x}$ ($x$=2.7--3.9) single crystal samples and…

Shape memory alloys have a wide range of applications, including high stroke actuation, energy-efficient ferroic cooling, and energy harvesting. These applications are based on a reversible martensitic transformation, which results in a…

We publish the first NIR spectra of grain particulate mixtures of water ice, epsomite, and halite at cryogenic temperatures. Furthermore, we perform a quantitative assessment of the ability of both intimately- and linearly-mixed models to…

地球与行星天体物理 · 物理学 2025-10-20 Jodi Berdis , Carlie Wagoner , Akemi Takeuchi , Karl Hibbitts

The effect of finish rolling temperature (FRT) on the austenite- () to-bainite () phase transformation is quantitatively investigated in high-strength C-Mn steels. In particular, the present study aims to clarify the respective…

材料科学 · 物理学 2015-06-17 N. Bernier , L. Bracke , L. Malet , S. Godet

The dynamic magnetic properties of the distorted perovskite system La{0.7-x}Y{x}Ca{0.3}MnO{3} (0 <= x <= 0.15) have been investigated by ac-susceptibility and dc magnetization measurements, with emphasis on relaxation and aging studies.…

强关联电子 · 物理学 2009-10-31 R. S. Freitas , L. Ghivelder , F. Damay , F. Dias , L. F. Cohen

We study the effects of long range interactions on the phases observed in cohesive granular materials. At high vibration amplitudes, a gas of magnetized particles is observed with velocity distributions similar to non-magnetized particles.…

软凝聚态物质 · 物理学 2009-11-07 Daniel L. Blair , A. Kudrolli

As one of the most fascinating confined water/ice phenomena, two-dimensional square ice has been extensively studied and experimentally confirmed in recent years. Apart from the unidirectional homogeneous square icing patterns considered in…

流体动力学 · 物理学 2023-01-18 Zhen Zeng , Tianyou Wang , Rui Chen , Mengshan Suo , Kai Sun , Panagiotis E. Theodorakis , Zhizhao Che

Ferromagnetic solids acquire nontrivial magnetic and caloric properties when the temperature of the structural phase transition approaches the Curie point. Deciphering magneto-structural transitions, i.e. determining their characteristic…

The martensitic transformation in NiTi-based Shape Memory Alloys (SMAs) provides a basis for shape memory effect and superelasticity, thereby enabling applications requiring solid-state actuation and large recoverable shape changes upon…

Liquid salty micro-channels (brine) between growing ice platelets in sea ice are an important habitat for $CO_2$ - binding microalgaea with great impact on polar ecosystems. The structure formation of ice platelets is microscopically…

斑图形成与孤子 · 物理学 2017-03-14 K. Morawetz , S. Thoms , B. Kutschan

Particle separation is typically investigated regarding one particulate property only. Virtually all separation processes, however, act on various particle properties in different ways. Modern particle analytical modalities enable a…

软凝聚态物质 · 物理学 2024-02-02 Johanna Sygusch , Thomas Wilhelm , Orkun Furat , Volker Schmidt , Martin Rudolph

Ferroic materials enable a multitude of emerging applications, and optimum functional properties are achieved when ferromagnetic and ferroelectric properties are coupled to a first-order ferroelastic transition. In bulk materials, this…

材料科学 · 物理学 2024-08-02 Satyakam Kar , Yuki Ikeda , Kornelius Nielsch , Heiko Reith , Robert Maaß , Sebastian Fähler

Nanocrystalline ribbons of inverse Heusler alloy Mn2Ni1.6Sn0.4 have been synthesised by melt spinning of the arc melted bulk precursor. The single phase ribbons crystallize into a cubic structure and exhibit very fine crystallite size of <…

材料科学 · 物理学 2014-12-03 Nidhi Singh , Barsha Borgohain , A. K. Srivastava , Ajay Dhar , H. K. Singh

In this study, we demonstrate how the incorporation of appropriate feature engineering together with the selection of a Machine Learning (ML) algorithm that best suits the available dataset, leads to the development of a predictive model…

First principle calculations have been performed to understand the experimentally observed size sensitive variations in the characteristics of heat capacities of gallium clusters [G. A. Breaux {\it et. al.} J. Am. Chem. Soc., {\bf 126},…

材料科学 · 物理学 2007-05-23 Sailaja Krishnamurty , Kavita Joshi , Shahab Zorriasatein , D. G. Kanhere

Thermomechanical Controlled Processing (TMCP) is widely used to control the microstructure and properties of linepipe or high strength low alloy steels (HSLA). These steels are often joined by welding and used in demanding environments such…

材料科学 · 物理学 2026-03-10 Ruth M. Birch , Ben Britton , Warren J Poole

The oxidation of magnetite to maghemite is a naturally occurring process that leads to the degradation of the magnetic properties of magnetite nanoparticles. Despite being systematically observed with traditional macroscopic magnetization…

The resistivity $\rho_{dc}$ of manganites is studied using a random-resistor-network, based on phase-separation between metallic and insulating domains. When percolation occurs, both as chemical composition and temperature vary, results in…

强关联电子 · 物理学 2009-10-31 Matthias Mayr , Adriana Moreo , Jose A. Verges , Jeanette Arispe , Adrian Feiguin , Elbio Dagotto

The phenomenological theory of martensite crystallography (PTMC) developed in the 1950s explains the main crystallographic and microstructural features of martensite in shape memory alloys, such as the habit planes of bi-variant laminate…

材料科学 · 物理学 2026-01-27 Cyril Cayron