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Low-temperature specific-heat study has been performed on the insulating giant dielectric constant material CaCu3Ti4O12 and two related compounds, Bi2/3Cu3Ti4O12 and La0.5Na0.5Cu3Ti4O12, from 0.6 to 10 K. From analyzing the specific heat…

Materials Science · Physics 2009-11-13 C. P. Sun , Jianjun Liu , J. -Y. Lin , Chun-gang Duan , W. N. Mei , H. D. Yang

Using two different configurations of temperature and magnetic field gradients, we observed that, in a quasi one-dimensional magnetic fluid, magnetic force either reduces the temperature difference across the sample when the two gradients…

Soft Condensed Matter · Physics 2018-01-16 Jun Huang , Weili Luo , Tianshu Liu

We performed elastic neutron scattering measurements on the charge- and magnetically-ordered multiferroic material LuFe(2)O(4). An external electric field along the [001] direction with strength up to 20 kV/cm applied at low temperature…

Materials Science · Physics 2010-04-22 Jinsheng Wen , Guangyong Xu , Genda Gu , S. M. Shapiro

Thermodynamics of magnetic materials is discussed in practical, lab-oriented terms. In the common experimental configuration in which the external magnetic field comes from a solenoidal coil connected to a power supply, magnetic work is…

Classical Physics · Physics 2007-05-23 Thomas R. Lemberger

The control and measurement of local non-equilibrium configurations is of utmost importance in applications on energy harvesting, thermoelectrics and heat management in nano-electronics. This challenging task can be achieved with the help…

Mesoscale and Nanoscale Physics · Physics 2016-08-01 E. S. Tikhonov , D. V. Shovkun , D. Ercolani , F. Rossella , M. Rocci , L. Sorba , S. Roddaro , V. S. Khrapai

Domain wall motion in magnetic materiel induces the negative susceptibility leading to a perfect diamagnetism state. The local susceptibility is calculated by the derivative of magnetization ($\vec{M}$) vector w.r.t. magnetic field strength…

Applied Physics · Physics 2022-03-16 Nilesh Pandey , Yogesh Singh Chauhan

The main idea of magnetic hyperthermia is to increase locally the temperature of the human body by means of injected superparamagnetic nanoparticles. They absorb energy from a time-dependent external magnetic field and transfer it into…

Soft Condensed Matter · Physics 2021-09-27 Zs. Iszaly , I. G. Marian , I. A. Szabo , A. Trombettoni , I. Nandori

We theoretically study the spin-polarized current flowing through a Josephson junction (JJ) in a spin injection device. When the spin-polarized current is injected from a ferromagnet (FM) in a superconductor (SC), the charge current is…

Superconductivity · Physics 2009-10-31 S. Takahashi , T. Yamashita , T. Koyama , S. Maekawa , H. Imamura

Pyro-current measurements have been widely used to study ferroelectric properties in multiferroic materials. However, determination of intrinsic polarization by this method is not straightforward because of leakage current and trapped…

Materials Science · Physics 2015-01-06 Chandan De , Somnath Ghara , A. Sundaresan

The magnetic field which induced by the thermo-electric current in metals was detected and measured using of a flux-gate magnetometer. It is shown that the application of a temperature gradient on a metal rod gives rise to a circulating…

General Physics · Physics 2014-03-11 B. V. Vasiliev

The spatial distribution of electric current under magnetic field and the resultant orbital magnetism have been studied for two-dimensional electrons under a harmonic confining potential $V(\vecvar{r})=m \omega_0^2 r^2/2$ in various regimes…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Y. Ishikawa , H. Fukuyama

Owing to their exceptional chemical and electronic tunability, metal-organic frameworks can be designed to develop magnetic ground states making a range of applications feasible, from magnetic gas separation to the implementation of…

Although progress with twisted graphene nano-devices is boosting the superconductivity that is the consequence of their Moir\'e flat electronic bands, the immense choice for future development is an obstacle for their optimisation. We…

We address a problem which is mathematically reminiscent of the one of Anderson localization, although it is related to a strongly dissipative dynamics. Specifically, we study thermal convection in a horizontal porous layer heated from…

Fluid Dynamics · Physics 2013-10-03 Denis S. Goldobin , Elizaveta V. Shklyaeva

In a recent manuscript, the discovery of a new phenomenon in glasses has been reported: {\it glass paramagnetism}, that is the intrinsic magnetisation developed by a substance that has failed to crystallise in a temperature quench when…

Disordered Systems and Neural Networks · Physics 2021-11-25 Giancarlo Jug , Sandro Recchia

We investigate the magnetic properties of spin-$1/2$ charged Fermi gases with ferromagnetic coupling via mean-field theory, and find the interplay among the paramagnetism, diamagnetism and ferromagnetism. Paramagnetism and diamagnetism…

Statistical Mechanics · Physics 2016-01-15 Baobao Wang , Jihong Qin , Huaiming Guo

Nanorings asymmetrically connected to wires show different kinds of quantum interference phenomena under sudden excitations and in steady current conditions. Here we contrast the transient current caused by an abrupt bias to the magnetic…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Michele Cini , Enrico Perfetto , Chiara Ciccarelli , Gianluca Stefanucci , Stefano Bellucci

We report experimental results of low temperature magnetotransport in high mobility 2D electron systems exposed to radiation up to 20GHz frequency using a simple dipole configuration. Magnetoresistance oscillations are observed as in…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 R. L. Willett , L. N. Pfeiffer , K. W. West

The electrocaloric effect refers to the temperature change in a material when an electric field is applied or removed. Significant breakthroughs revealed its potential for solid-state cooling technologies in past decades. These devices…

Mesoscale and Nanoscale Physics · Physics 2025-04-10 Jean Spièce , Valentin Fonck , Charalambos Evangeli , Phil S. Dobson , Jonathan M. R. Weaver , Pascal Gehring

The thermomagnetic convection of magnetic fluids in a cylindrical geometry subjected to a homogeneous magnetic field is studied. The study is motivated by a novel thermal instability [W. Luo et al., Phys. Rev. Lett. 82, 4134 (1999)]. As…

Pattern Formation and Solitons · Physics 2009-11-07 Adrian Lange