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Room temperature ferromagnetic hysteresis is observed in commercial SrTiO$_3$ substrates purchased from a variety of suppliers. It is shown that the ferromagnetic signal comes from the unpolished surfaces. Surface impurity phases cannot be…

Materials Science · Physics 2015-05-19 D. A. Crandles , B. DesRoches , F. S. Razavi

X-ray resonant scattering has been used to measure the magnetic order of the Dy ions below 40K in multiferroic DyMn$_{2}$O$_{5}$. The magnetic order has a complex behaviour. There are several different ordering wavevectors, both…

Strongly Correlated Electrons · Physics 2008-04-21 R. A. Ewings , A. T. Boothroyd , D. F. McMorrow , D. Mannix , H. C. Walker , B. M. R. Wanklyn

Structure-property relationships in ordered materials have long been a core principle in materials design. However, the intentional introduction of disorder into materials provides structural flexibility and thus access to material…

The mechanism of the evolution of the deformed microstructure at the earliest stage of annealing where the existence of the lowest length scale substructure paves the way to the formation of the so-called subgrains, has been studied for the…

Materials Science · Physics 2010-07-02 P. S. Chowdhury , N. Gayathri , P. Mukherjee , M. Bhattacharya , A. Chatterjee , A. Dutta+ , P. Barat

The current progress of materials science regarding multifunctional materials (MFM) has put forward the challenges to understand the microscopic origin of their properties. Most of such MFMs have magneto-elastic correlations. To investigate…

Materials Science · Physics 2015-06-02 Aga Shahee , Shivani Sharma , K. Singh , N. P. Lalla , P. Chaddah

Single crystals of the unconventional superconductor UTe$_2$ have been grown in various conditions which result in different superconducting transition temperature as well as normal state properties. Stoichiometry of the samples has been…

Superconductivity · Physics 2022-03-11 Y. Haga , P. Opletal , Y. Tokiwa , E. Yamamoto , Y. Tokunaga , S. Kambe , H. Sakai

We argue, for a wide class of systems including graphene, that in the low temperature, high density, large separation and strong screening limits the drag resistivity behaves as d^{-4}, where d is the separation between the two layers. The…

Mesoscale and Nanoscale Physics · Physics 2015-03-20 B Amorim , N M R Peres

The in situ synchrotron high-energy X-ray powder diffraction (XRD) technique is highly utilized by researchers to analyze the crystallographic structures of materials in functional devices (e.g., battery materials) or in complex sample…

Image and Video Processing · Electrical Eng. & Systems 2022-12-16 Howard Yanxon , James Weng , Hannah Parraga , Wenqian Xu , Uta Ruett , Nicholas Schwarz

Isolated Neutron Stars are some of the most exciting stellar objects known to astronomers: they have the most extreme magnetic fields, with values up to $10^{15}$ G, and, with the exception of stellar-mass black holes, they are the most…

High Energy Astrophysical Phenomena · Physics 2018-02-15 R. P. Mignani , V. Testa , D. Gonzalez Caniulef , R. Taverna , R. Turolla , S. Zane , K. Wu , G. Lo Curto

The significance of a negative dielectric constant has long been recognized. We report here the observation of a field-induced large negative dielectric constant of aggregates of oxide nano-particles at frequencies below ~ 1 Hz at room…

Superconductivity · Physics 2009-11-11 C. W. Chu , F. Chen , J. Shulman , S. Tsui , Y. Y. Xue , W. Wen , P. Sheng

The force exerted on a material by an incident beam of light is dependent upon the material's velocity in the laboratory frame of reference. This velocity dependence is known to be diffcult to measure, as it is proportional to the incident…

Optics · Physics 2012-05-28 S. A. R. Horsley , M. Artoni , G. C. La Rocca

We experimentally investigate the mix-dimensional scattering occurring when the collisional partners live in different dimensions. We employ a binary mixture of ultracold atoms and exploit a species-selective 1D optical lattice to confine…

Quantum Gases · Physics 2010-04-16 G. Lamporesi , J. Catani , G. Barontini , Y. Nishida , M. Inguscio , F. Minardi

The highly diluted antiferromagnet Mn(0.35)Zn(0.65)F2 has been investigated by neutron scattering for H>0. A low-temperature (T<11K), low-field (H<1T) pseudophase transition boundary separates a partially antiferromagnetically ordered phase…

Disordered Systems and Neural Networks · Physics 2009-10-31 F. C. Montenegro , D. P. Belanger , Z. Slanic , J. A. Fernandez-Baca

Recent results on the optical properties of mono- and few-layers of semiconducting transition metal dichalcogenides are reviewed. Experimental observations are presented and discussed in the frame of existing models, highlighting the limits…

Mesoscale and Nanoscale Physics · Physics 2017-09-19 M. Koperski , M. R. Molas , A. Arora , K. Nogajewski , A. O. Slobodeniuk , C. Faugeras , M. Potemski

Neutron diffraction measurements, performed in presence of an external magnetic field, have been used to show structural evidence for the kinetic arrest of the first-order phase transition from the high temperature austenite phase to the…

A complete investigation of the discharge behavior of dielectric barrier discharge device using ZnO-coated dielectric layer in atmospheric pressure is made. Highly conductive ZnO film was deposited on the dielectric surface. Discharge…

Plasma Physics · Physics 2011-12-20 Meng Li , Hai Dong , Xiaoping Tao

The high temperature ferromagnetism in Sr3YCo4O10+delta perovskite, whose origin has been the subject of a considerable debate, has been studied by neutron powder diffraction and synchrotron X-ray diffraction measurements. Oxygen vacancy…

We demonstrate that powder diffraction data can be collected from sub-micron crystals of a mbrane protein with nearly two orders of magnitude more atoms than the molecules commonly used for powder diffraction. The crystals of photosystem-1…

High-temperature (T) and high-electric-field (E) effects on Pb[(Zn_{1/3} Nb_{2/3})_{0.92} Ti_{0.08}]O_3 (PZN-8%PT) were studied comprehensively by neutron diffraction in the ranges 300 <= T <= 550 K and 0 <= E <= 15 kV/cm. We have focused…

Materials Science · Physics 2009-11-07 Kenji Ohwada , Kazuma Hirota , Paul W. Rehrig , Yasuhiko Fujii , Gen Shirane

Different techniques of the X-ray Diffraction Line Profile Analysis (XRDLPA) have been used to assess the microstructure of the irradiated Zr-1.0%Nb-1.0%Sn-0.1%Fe alloy. The domain size, microstrain, density of dislocation and the stacking…

Materials Science · Physics 2007-05-23 A. Sarkar , P. Mukherjee , P. Barat
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