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  1. No Access

    Article

    Investigation of magnetic phase transitions in dilute copper ferrites

    Mössbauer spectra of copper ferrites CuGa x Al2x Fe2 − 3x O4 (x = 0.3, 0.4, 0.5) have been measured at temperatures in the range f...

    A. A. Opalenko, A. B. Korshak, L. G. Antoshina in Physics of the Solid State (2011)

  2. No Access

    Article

    Investigation of magnetic phase transitions in diluted ferrites: Nickel ferrite

    The Mössbauer spectra of nickel ferrite NiGa x Al x Fe2 − 2x O4 were measured with significant dilution by nonmagnetic i...

    A. A. Opalenko, A. I. Firov, A. B. Korshak… in Moscow University Physics Bulletin (2010)

  3. No Access

    Article

    Anomalous behavior of the coercive force of dilute nickel ferrites NiGa x Al x Fe2 − 2 x O4 with a frustrated magnetic structure

    The behavior of the spontaneous magnetization σ s (T) and coercive force H c (T) of dilute nickel ferrites NiGa ...

    L. G. Antoshina, A. B. Korshak in Physics of the Solid State (2009)

  4. No Access

    Article

    Mössbauer study of copper ferrite diluted by Ga3+ and Al3+ ions

    Mössbauer spectra of the CuGa x Al2x Fe2 − 3x O4 system (x = 0.1, 0.2, 0.3, 0.4, 0.5) have been studied at a temperature of 295 K....

    L. G. Antoshina, E. N. Evstaf’eva, A. A. Opalenko in Physics of the Solid State (2009)

  5. No Access

    Article

    Influence of magnetic ordering on the electrical properties of nickel ferrite-chromite (NiFeCrO4) in the region of temperature compensation

    An abrupt rise of the permittivity ɛ of nickel ferrite-chromite (NiFeCrO4) is discovered near the compensation temperature Tc. The hysteresis character of this increase is demonstrated. Correlation between the ma...

    L. G. Antoshina, E. N. Evstaf’eva in Moscow University Physics Bulletin (2008)

  6. No Access

    Article

    Magnetic ordering in nickel ferrite-chromite NiFeCrO4 below the compensation temperature

    The behavior of the magnetoresistance of nickel ferrite-chromite NiFeCrO4 is studied at temperatures in the vicinity of the compensation temperature. A model of magnetic ordering in this compound is proposed. It ...

    L. G. Antoshina, E. N. Evstaf’eva, A. I. Kokorev in Physics of the Solid State (2007)

  7. No Access

    Article

    Influence of magnetic ordering on the structural properties of dilute copper ferrites

    The x-ray structural properties of samples in the CuGaxAlxFe2−2x O4 (x = 0−0.7) and CuGaxAl2x Fe2−3x O4 (x = 0−0.5) systems are studied. It is found that magnetic o...

    L. G. Antoshina, E. N. Evstaf’eva, A. I. Kokorev… in Physics of the Solid State (2007)

  8. No Access

    Article

    Temperature dependence of the spontaneous magnetization of Cu x Ni1-x Fe0.6Cr1.4O4 chromite ferrites with a frustrated magnetic structure

    The behavior of the spontaneous magnetization σ s (T) of samples in the Cu x Ni1-x Fe0.6Cr1.4O4 system (x = 0, 0.1, 0.2, 0.3, 0....

    L. G. Antoshina in Physics of the Solid State (2006)

  9. No Access

    Article

    Susceptibility of the paraprocess in spinel ferrites with a frustrated magnetic structure

    The temperature dependence of the susceptibility of the paraprocess χpara (T) is investigated for samples in the CuGaxAlxFe2−2x O4 (x = 0.2, 0.3, 0.4, 0.5, 0.6, 0.7), CuGaxAl2x Fe2−3x O4 (x = 0.1, 0.2, 0.3, 0.4, ...

    L. G. Antoshina, E. N. Evstaf’eva, A. I. Kokorev… in Physics of the Solid State (2005)

  10. No Access

    Article

    The origin of frustration of magnetic coupling in the NiFeCrO4 ferrite

    The magnetostriction of the NiFeCrO4 ferrite is investigated for the first time. It is found that the frustration of magnetic coupling occurs only in the B sublattice of the NiFeCrO4 ferrite, whereas the A sublat...

    L. G. Antoshina, A. N. Goryaga, D. A. Chursin in Physics of the Solid State (2002)

  11. No Access

    Article

    Magnetic structure of the NiCr2O4 nickel chromite

    The magnetic properties of the NiCr2O4 chromite are investigated and compared with similar properties of the NiFe1.1Cr0.9O4 nickel ferrite-chromite material. It is found for the first time that the tetrahedral (A

    A. N. Goryaga, L. G. Antoshina, A. I. Kokorev, D. A. Chursin in Physics of the Solid State (2002)

  12. No Access

    Article

    Effect of frustration on the magnetization in nickel ferrite-chromites

    A study is reported on the behavior of the isotherms of the magnetization σ(H) and of the longitudinal λ‖(H), transverse λ⊥(H), volume ω(H), and anisotropic λt(H) magnetostrictions measured at T=80 K in the Cu0.4

    L. G. Antoshina, A. N. Goryaga in Physics of the Solid State (2001)

  13. No Access

    Article

    Effect of Cu2+-O2− covalency on the magnetostriction of ferrite spinels

    The magnetostriction of a number of copper-containing ferrite spinels was measured. In all the ferrites studied, below room temperature, |λ‖| was found to decrease with temperature. It is conjectured that this de...

    L. G. Antoshina, A. N. Goryaga in Physics of the Solid State (2001)

  14. No Access

    Article

    Effect of the spin-orbit interaction of Ni2+ ions with a triplet orbital ground state on the magnetostriction of NiFe0.5Cr1.5O4 ferrite

    The magnetization σ and the longitudinal (λ∥) and transverse (λ⊥) magnetostrictions of the NiFe0.5Cr1.5O4 ferrite containing the tetrahedral ions Ni2+ with the triplet orbital ground state have been investigated ...

    L. G. Antoshina, A. N. Goryaga, R. R. Annaev in Physics of the Solid State (2000)

  15. No Access

    Article

    Temperature dependence of spontaneous magnetization of spinel ferrites with a frustrated magnetic structure

    The spontaneous magnetization of the Ni0.4Fe0.6[Ni0.6Cr1.4]O4, Cu0.4Fe0.6[Ni0.6Cr1.4]O4, and Zn0.4Fe0.6[Ni0.6Cr1.4]O4 samples has been investigated. Based on the results obtained, it is concluded that the anomalo...

    L. G. Antoshina, A. N. Goryaga, V. V. San’kov in Physics of the Solid State (2000)

  16. No Access

    Article

    Influence of frustration on magnetization processes in the ferrite CoFeCrO4

    The behavior of isotherms of the magnetization σ(H) and the longitudinal λ‖ and transverse λ⊥ magnetostriction of the polycrystalline ferrite CoFeCrO4 with frustrated magnetic structure has been investigated for ...

    L. G. Antoshina, A. N. Goryaga, R. R. Annaev in Physics of the Solid State (1999)

  17. No Access

    Article

    Study of the magnetic properties of ferrites in the CuGaxAlxFe2−2x O4 system having a frustrated magnetic structure

    This paper reports a first preparation of samples of the CuGaxAlxFe2−2x O4 system (x=0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, and 0.7) and a study of temperature dependences of their spontaneous...

    L. G. Antoshina, E. N. Kukudzhanova in Physics of the Solid State (1998)

  18. No Access

    Article

    Effect of Cr3+ ions on the magnetic moment of ferrites of the system CuFe2−x CrxO4

    The dependence of the magnetic moment n 0exp of samples of the system CuFe2−x CrxO4 (x=0.0, 0.2, 0.3, 1.0, 1.4, 1.6, and 2.0) on their Cr3+ content is examined here for the first time. It is found that the experi...

    L. G. Antoshina, A. N. Goryaga, E. N. Kukudzhanova in Physics of the Solid State (1998)

  19. No Access

    Article

    Anomalous magnetic properties of ferrites of the CuFe2−x CrxO4 system with high Cr3+ content

    The paper reports on a comprehensive study of magnetic properties of CuFe2−x CrxO4 ferrites (x=0.0, 0.2, 0.3, 1.0, 1.4, 1.6, and 2.0). The curves of magnetization versus temperature, σ s(T), of the ferrites with

    L. G. Antoshina, A. N. Goryaga… in Journal of Experimental and Theoretical Ph… (1997)