34 Result(s)

Article

Loading mortars from silos by aerated flow

G. P. Vorob'ev in Refractories (1982)

Article

Aspects of magnetic ordering in the system (Fe_xCr_1−x )₂O₃

Anomalon in temperature dependence of the magnetic moment (FexCr_1−x )₂O₃ single crystal has been observed which can be explained by antiparallel orientation of the mean weakly-ferromagnetic moments of the d subsy...

G. P. Vorob’ev, A. M. Kadomtseva, A. S. Moskvin, Yu. F. Popov… in Physics of the Solid State (1997)

Article

Magnetoelectric effect and toroidal ordering in Ga_2−x Fe_xO₃

The field dependence of the magnetoelectric effect and longitudinal magnetostriction of Ga_2−x Fe_xO₃ single crystals is studied in magnetic fields up to 200 kOe in the temperature range from 4.2 to 300 K. It is sh...

Yu. F. Popov, A. M. Kadomtseva… in Journal of Experimental and Theoretical Ph… (1998)

Article

Magnetic-field-induced toroidal moment in the magnetoelectric Cr₂O₃

The appearance of a toroidal moment is observed in the magnetoelectric Cr₂O₃ in a strong magnetic field above the spin-flop transition field. This conclusion is based on the experimentally established fact that t...

Yu. F. Popov, A. M. Kadomtseva, D. V. Belov… in Journal of Experimental and Theoretical Ph… (1999)

Article

Thermal-expansion and magnetostriction anomalies in phase transitions in La_1−x Sr_xMnO₃

A study is reported on phase transitions in the La_1−x Sr_xMnO₃ system, both spontaneous and induced by a pulsed magnetic field of up to 250 kOe, accompanied by anomalies in magnetoelastic properties. The temperatu...

A. M. Kadomtseva, Yu. F. Popov, G. P. Vorob’ev, K. I. Kamilov… in Physics of the Solid State (2000)

Article

Anomalies of magnetoelastic properties and insulator-metal phase transitions induced by a magnetic field in substituted praseodymium manganites

The magnetostriction of Pr_0.6Ca_0.4MnO₃ and Pr_0.65Ca_0.28Sr_0.07MnO₃ manganite crystals is investigated in pulsed magnetic fields up to 250 kOe. The field-induced phase transitions from the charge-ordered antiferrom...

Yu. F. Popov, A. M. Kadomtseva, G. P. Vorob’ev, K. I. Kamilov… in Physics of the Solid State (2001)

Article

Magnetic and structural phase transitions in YMn₂O₅ ferromagnetoelectric crystals induced by a strong magnetic field

Magnetic, magnetoelectric, and magnetoelastic properties of YMn₂O₅ ferromagnetoelectric single-crystals are investigated in strong pulsed magnetic fields of up to 250 kOe and in static magnetic fields of up to 12...

Yu. F. Popov, A. M. Kadomtseva, S. S. Krotov… in Journal of Experimental and Theoretical Ph… (2003)

Article

The nature of magnetoelastic anomalies in Nd_0.5Sr_0.5MnO₃ upon suppression of charge ordering by a magnetic field

This paper reports on the results of investigations into the magnetic and magnetoelastic properties of Nd_0.5Sr_0.5MnO₃ single crystals in pulsed magnetic fields up to 250 kOe, the magnetic and kinetic properties o...

Yu. F. Popov, A. M. Kadomtseva, G. P. Vorob’ev, K. I. Kamilov… in Physics of the Solid State (2003)

Article

Effect of Gd-Mn exchange on phase transitions in GdMn₂O₅ induced by a strong magnetic field

Complex studies of the magnetic, magnetoelectric, and magnetoelastic properties of GdMn₂O₅ single crystals in strong pulsed magnetic fields are carried out in order to obtain additional indirect information on th...

Yu. F. Popov, A. M. Kadomtseva, G. P. Vorob’ev, S. S. Krotov… in Physics of the Solid State (2003)

Chapter and Conference Paper

Weak Ferromagnetism Discovery at Modulated Structure Destruction for BiFeO₃

In this paper the results of experimental and theoretical researches of bismuth ferrite in high magnetic fields that were conducted by the authors in the last decade are considered. The rise of several new eff...

Yu. F. Popov, A. M. Kadomtseva… in Magnetoelectric Interaction Phenomena in C… (2004)

Article

Space-time parity violation and magnetoelectric interactions in antiferromagnets

The properties of antiferromagnetic materials with violated space-time parity are considered. Particular attention is given to the bismuth ferrite BiFeO₃ ferroelectric magnet. This material is distinguished from ...

A. M. Kadomtseva, A. K. Zvezdin… in Journal of Experimental and Theoretical Ph… (2004)

Article

Anomalies in the magnetic and magnetoelastic properties of Sm_1−x Sr_xMnO₃ single crystals (x ∼ 0.5) at phase transitions

By studying the magnetic and magnetoelastic properties, it is established that, as the temperature is lowered, Sm_1−x Sr_xMnO₃ single crystals (x=0.5, 0.55) undergo spontaneous phase transitions from the paramagnet...

Yu. F. Popov, A. M. Kadomtseva, G. P. Vorob’ev, A. A. Mukhin… in Physics of the Solid State (2004)

Article

Anomalies in the magnetic and magnetoelastic properties of Nd_1−x Ca_xMnO₃ single crystals in strong magnetic fields

Measurements of the magnetic and magnetoelastic properties of Nd_0.5Ca_0.5MnO₃, Nd_0.55Ca_0.45MnO₃, and Nd_0.6Ca_0.4MnO₃ single crystals have revealed correlations between the observed anomalies in magnetization and ma...

Yu. F. Popov, A. M. Kadomtseva, G. P. Vorob’ev, K. I. Kamilov… in Physics of the Solid State (2004)

Article

Specificity of magnetoelectric effects in a new GdMnO₃ magnetic ferroelectric

A complex study of the magnetic, electric, magnetoelectric, and magnetoelastic properties of GdMnO₃ single crystals has been performed in the low-temperature region in strong pulsed magnetic fields up to 200 kOe....

A. M. Kadomtseva, Yu. F. Popov… in Journal of Experimental and Theoretical Ph… (2005)

Article

The possible mechanisms of phase transitions in RMn₂O₅ oxide family

The magnetic, magnetoelectric, and magnetoelastic properties of ErMn₂O₅ single crystals have been studied at low temperatures and strong magnetic fields (up to 250 kOe) and compared to the analogous results obtai...

A. M. Kadomtseva, S. S. Krotov, Yu. F. Popov… in Journal of Experimental and Theoretical Ph… (2005)

Article

Magnetoelectric effects in gadolinium iron borate GdFe₃(BO₃)₄

Magnetoelectric interactions have been investigated in a single crystal of gadolinium iron borate GdFe₃(BO₃)₄, whose macroscopic symmetry is characterized by the crystal class 32. Using the results of this study,...

A. K. Zvezdin, S. S. Krotov… in Journal of Experimental and Theoretical Ph… (2005)

Article

Specific features of the magnetic field-induced orientational transition in EuMnO₃

It is found that the spin-flop transition in EuMnO₃ manganite induced by a magnetic field H parallel to the b axis is accompanied not only by a magnetization jump and magnetostriction anomalies but also by the ap...

A. M. Kadomtseva, Yu. F. Popov… in Journal of Experimental and Theoretical Ph… (2005)

Article

Observation of electric polarization in Gd_1−x Sr_xMnO₃ (x = 0.5, 0.6, 0.7) single crystals

In Gd_1−x Sr_xMnO₃ (x = 0.5, 0.6, 0.7) single crystals, a change in electric polarization (ΔP ∼ 100 μK/m²) is found to accompany the suppression of the charge-ordered spin-glass state and the transition to the ferr...

A. M. Kadomtseva, Yu. F. Popov… in Journal of Experimental and Theoretical Ph… (2005)

Article

Magnetoelectric and magnetoelastic interactions in NdFe₃(BO₃)₄ multiferroics

Complex experimental and theoretical investigations of the magnetic, magnetoelectric, and magnetoelastic properties of neodymium iron borate NdFe₃(BO₃)₄ along various crystallographic directions have been carried...

A. K. Zvezdin, G. P. Vorob’ev, A. M. Kadomtseva, Yu. F. Popov… in JETP Letters (2006)

Article

Phase transitions induced by a strong magnetic field in electron-doped manganites

The magnetic and magnetoelastic properties of single crystals of electron-doped rare-earth manganites La_1−x Sr _x MnO₃ are studied. Phase transitions from the A-ty...

A. M. Kadomtseva, Yu. F. Popov, G. P. Vorob’ev, K. I. Kamilov… in Physics of the Solid State (2006)