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相关论文: Magnetoelastic effects in Jahn-Teller distorted Cr…

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Neutron scattering studies on a single crystal of the highly-correlated electron system, La1-xSrxMnO3 with x~0.3, have been carried out elucidating both the spin and lattice dynamics of this metallic ferromagnet. We report a large measured…

凝聚态物理 · 物理学 2009-10-28 Michael C. Martin , G. Shirane , Y. Endoh , K. Hirota , Y. Moritomo , Y. Tokura

We show that room temperature resistivity of Ba0.5Sr1.5Zn2Fe12O22 single crystals increases by more than three orders of magnitude upon being subjected to optimized heat treatments. The increase in the resistivity allows the determination…

材料科学 · 物理学 2010-01-11 Y S Chai , S H Chun , S Y Haam , Y S Oh , Ingyu Kim , Kee Hoon Kim

For the first time, magnetic properties of fullerides have been studied using a torque technique. Rb3C60 single crystal has been investigated in these experiments. It was shown that this method is sensitive to the structural phase…

超导电性 · 物理学 2010-07-01 J. Chigvinadze , V. Buntar , S. Ashimov , T. Machaidze , G. Donadze

Temperature and field-dependent magnetization $M(H,T)$ measurements and neutron scattering study of a single crystal CeSb$_2$ are presented. Several anomalies in the magnetization curves have been confirmed at low magnetic field, i.e., 15.6…

材料科学 · 物理学 2020-08-26 B. Liu , L. Wang , I. Radelytskyi , Y. Zhang , M. Meven , H. Deng , F. Zhu , Y. Su , X. Zhu , S. Tan , A. Schneidewind

Single crystals of AlFe$_{2}$B$_{2}$ have been grown using the self flux growth method and then measured the structural properties, temperature and field dependent magnetization, and temperature dependent electrical resistivity at ambient…

We analysed the flux-flow region of isofield magneto resistivity data obtained on three crystals of BaFe$_{2-x}$Ni$_x$As$_2$ with $T_c$$\sim$20 K for three different geometries relative to the angle formed between the applied magnetic field…

超导电性 · 物理学 2017-03-23 S Salem-Sugui , A D Alvarenga , H-Q Luo , R Zhang , D-L Gong

Ni-Mn-based Heusler alloys, in particular all-d-metal Ni(-Co)-Mn-Ti, are highly promising materials for energy-efficient solid-state refrigeration as large multicaloric effects can be achieved across their magnetostructural martensitic…

We have investigated temperature dependence of the lattice parameters and the unit cell volume of ZnF$_2$ by neutron diffraction and have discovered negative thermal expansion (NTE) at low temperature. To understand why this simple compound…

材料科学 · 物理学 2012-07-03 Tapan Chatterji , Mohamed Zbiri , Thomas C. Hansen

We have studied the magnetic and thermodynamic properties as well as the NMR spectra of the Heisenberg antiferromagnet RbFe(MoO4)2. The observed temperature dependence of the order parameter, the critical indices and the overall magnetic…

Designing the high performance magneto or elastocaloric effect in NiMnIn alloys with spin-lattice coupling in a deep freezing temperature range of 200 K to 255 K is challenging due to the limited lattice entropy change and large negative…

Effect of the temperature and magnetic field induced martensitic transformation (MT) on the electronic structure and some physical properties of bulk Fe$_{45.2}$Mn$_{25.9}$Ga$_{28.9}$ Heusler alloy has been investigated. {According to the…

材料科学 · 物理学 2019-02-21 Y. V. Kudryavtsev , N. V. Uvarov , A. E. Perekos , J. Dubowik , L. E. Kozlova

The effects of high magnetic fields applied perpendicular to the spontaneous ferroelectric polarization on single crystals of BiFeO$_3$ were investigated through magnetization, magnetostriction, and neutron diffraction measurements. The…

We have used high-resolution neutron Larmor diffraction and capacitative dilatometry to investigate spontaneous and forced magnetostriction in undoped, antiferromagnetic YBa$_2$Cu$_3$O$_{6.0}$, the parent compound of a prominent family of…

强关联电子 · 物理学 2016-02-29 B. Nafradi , T. Keller , F. Hardy , C. Meingast , A. Erb , B. Keimer

In this paper, we present temperature and field dependent neutron diffraction (ND) study to unravel the structural and the magnetic properties in Ni50Mn38Sb12 Heusler system. This alloy shows martensitic transition from high temperature…

材料科学 · 物理学 2017-02-06 Roshnee Sahoo , Amitabh Das , Norbert Stuesser , K. G. Suresh

We use neutron scattering to study the spin and lattice structures of single crystal and powder samples of Na$_{1-\delta}$FeAs ($T_c = 23$ K). On cooling from room temperature, the system goes through a series of phase transitions: first…

超导电性 · 物理学 2009-07-10 Shiliang Li , Clarina de la Cruz , Q. Huang , G. F. Chen , T. -L. Xia , J. L. Lou , N. L. Wang , Pengcheng Dai

We have carried out $^{63,65}$Cu NMR spectra measurements in magnetic field up to about 45~T on single crystal of a multiferroic triangular antiferromagnet CuCrO$_2$. The measurements were performed for magnetic fields aligned along the…

强关联电子 · 物理学 2016-12-21 Yu. A. Sakhratov , L. E. Svistov , P. L. Kuhns , H. D. Zhou , A. P. Reyes

Spin-lattice dynamics is used to study the magnetic properties of Fe foams. The temperature dependence of the magnetization in foams is determined as a function of the fraction of surface atoms in foams, nsurf. The Curie temperature of…

We use combine high resolution neutron diffraction (HRPD) with density functional theory (DFT) to investigate the exchange striction at the Curie temperature (TC) of Fe2P and to examine the effect of boron and carbon doping on the P site.…

材料科学 · 物理学 2013-07-26 Z. Gercsi , E. K. Delczeg-Czirjak , L. Vitos , A. S. Wills , A. Daoud-Aladine , K. G. Sandeman

The thermodynamic properties of the ferromagnetic perovskite YTiO$_3$ are investigated by thermal expansion, magnetostriction, specific heat, and magnetization measurements. The low-temperature spin-wave contribution to the specific heat,…

The ultrasonic properties of La$_{1-x}$Ca$_{x}$MnO$_{3}$ ($x\approx 0.25$) with the Curie temperature $T_C$ about 200 K are studied. Temperature dependences of longitudinal and transverse sound velocities were measured in zero magnetic…