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Bismuth telluride-based materials is the only commercially viable room-temperature thermoelectric material, despite its limited tellurium and poor mechanical properties. The search for materials with a high figure of merit (zT > 1.00) near…

Materials Science · Physics 2024-12-06 Bingquan Peng , Yinshuo Li , Liang Chen

The ferromagnetic (FM) transition temperature (Tc) of a two-band Double-Exchange (DE) model for colossal magnetoresistance (CMR) materials is studied using dynamical mean-field theory (DMFT), in wide ranges of coupling constants, hopping…

Other Condensed Matter · Physics 2009-11-11 F. Popescu , C. Sen , E. Dagotto

Colossal enhancement of magnetoresistance has been achieved over a broad temperature range which extends upto the room temperature, in ferromagnetic metal-charge ordered insulator manganite multi-layers. The artificially created phase…

Mesoscale and Nanoscale Physics · Physics 2010-06-24 Soumik Mukhopadhyay , I. Das

We study IrCrMnZ (Z=Al, Ga, Si, Ge) systems using first-principles calculations from the perspective of their application as the electrode materials of MgO-based MTJs. These materials have highly spin-polarized conduction electrons with…

Materials Science · Physics 2021-11-30 Tufan Roy , Masahito Tsujikawa , Masafumi Shirai

We report an experimental discovery of CrSnS3, a new Van der Waals ferromagnetic (FM) with Curie temperature TC ~119K. The Curie temperature is in qualitative agreement of Chittari et. al. DFT prediction (TC =112.3K) for an Ising model with…

Strongly Correlated Electrons · Physics 2022-07-29 F. Obad , Kh. A. Ziq

We have investigated the structural, magnetic, thermodynamic, and charge transport properties of Mn1/3NbS2 single crystals through x-ray and neutron diffraction, magnetization, specific heat, magnetoresistance, and Hall effect measurements.…

wo-dimensional (2D) materials unique properties and their promising applications in post-silicon microelectronics have attracted significant attention in the past decade. Recently, ferromagnetic order with out-of-plane easy axis in a…

Materials Science · Physics 2020-07-28 Maedeh Rassekh , Junjie He , Saber Farjami Shayesteh , Juan Jose Palacios

We report that entirely end-bonded multi-walled carbon nanotubes (MWNTs) can show superconductivity with the transition temperature Tc as high as 12K that is approximately 40-times larger than those reported in ropes of single-walled…

Superconductivity · Physics 2009-11-11 I. Takesue , J. Haruyama , N. Kobayashi , S. Chiashi , S. Maruyama , T. Sugai , H. Shinohara

The influence of antisite disorder occupancies on the magnetic properties of the half-metallic Co$_2$MnSi compound was studied by experimental techniques and first-principles calculations. The neutron diffraction studies show almost…

Materials Science · Physics 2019-10-18 S. J. Ahmed , C. Boyer , M. Niewczas

The temperature dependent crystal structure analysis in martensitic phase of Ni_2Mn_(1+x)Sn_(1-x) (x = 0.40 and 0.44) magnetic shape memory alloy is performed using X-ray diffraction. The martensitic phase consists of 4-Layered and…

Materials Science · Physics 2017-01-31 Soumyadipta Pal , Sandeep Singh , Chhayabrita Maji

We report a detailed study of the magnetocaloric effect in heterostructures of La2NiMnO6 and La2/3Sr1/3MnO3. The shape, width and magnitude of the temperature dependence of the magnetic entropy change ($\Delta S_{m}$) for these multilayer…

Applied Physics · Physics 2022-11-08 Mohammad Abbasi Eskandari , Seyedeh Sara Ghotb , Mohamed balli , Patrick Fournier

In this work, we study the thermo-mechanical behavior of metallic structures designed to significantly change shape in response to thermal stimuli. This behavior is achieved by arranging two metals with different coefficient of thermal…

Applied Physics · Physics 2020-06-30 Semih Taniker , Paolo Celli , Damiano Pasini , Douglas Hofmann , Chiara Daraio

For the study of ferromagnetic materials which are compatible with group-IV semiconductor spintronics, we demonstrate control of the ferromagnetic properties of Heusler-alloys Fe_3-xMn_xSi epitaxially grown on Ge(111) by tuning the Mn…

Materials Science · Physics 2009-11-13 K. Hamaya , H. Itoh , O. Nakatsuka , K. Ueda , K. Yamamoto , M. Itakura , T. Taniyama , T. Ono , M. Miyao

Materials with large intrinsic valley splitting and high Curie temperature are a huge advantage for studying valleytronics and practical applications. In this work, using first-principles calculations, a new Janus TaNF monolayer is…

Materials Science · Physics 2023-04-13 Guibo Zheng , Shuixian Qu , Wenzhe Zhou , Fangping Ouyang

Magnetic and heat capacity measurements have been carried out on the polycrystalline sample of DyNi which crystallizes in the orthorhombic FeB structure (space group Pnma). This compound is ferromagnetic with a Curie temperature of 59 K.…

Strongly Correlated Electrons · Physics 2009-11-11 S. K. Tripathy , K. G. Suresh , R. Nirmala , A. K. Nigam , S. K. Malik

We report the discovery of structural phase transitions and superconductivity in the full Heusler compounds $X$Pd$_2$Sn ($X$ = Ti, Zr, Hf), by means of electrical transport, magnetic susceptibility, specific heat and x-ray diffraction…

Superconductivity · Physics 2023-03-07 Hang Su , Feng Du , Rui Li , Shuaishuai Luo , Yuxuan Chen , Jiyong Liu , Ye Chen , Chao Cao , Michael Smidman , Huiqiu Yuan

Half topological states of matter and two-dimensional (2D) magnetism have gained much attention recently. In this paper, we propose a special topological semimetal phase called a 2D half Chern-Weyl semimetal (HCWS), which is a 2D magnetic…

Mesoscale and Nanoscale Physics · Physics 2022-11-23 Wei Xu , Jiawei Yi , Hao Huan , Bao Zhao , Yang Xue , Zhongqin Yang

Binary transition metal nitride with a graphene-like structure and strong magnetic properties is rare. Based on the first-principles calculations, we design two kinds of $M$N$_4$ ($M$ =transition metal) monolayers, which are transition…

Materials Science · Physics 2024-06-19 Shuo Zhang , Panjun Feng , Dapeng Liu , Hongfen Wu , Miao Gao , Tongshuai Xu , Xun-Wang Yan , Z. Y. Xie

We report measurements of the magnetic susceptibility of twinned single crystals of YBa$_{2}$Cu$_{3}$O$_{6+x}$ from just above their superconducting transition temperatures to 300 K with magnetic fields of up to 5 T applied parallel and…

Superconductivity · Physics 2016-09-21 I. Kokanović , J. R. Cooper

Piezoelectric and ferroelectric ceramics with a high Curie temperature (Tc) have attracted a growing attention owning to their applications under severe environments. In this work, phase structure, dielectric, ferroelectric and…

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