TY  - JOUR
AU  - Zorkovska, A.
AU  - Baran, A.
AU  - Bradarić, Ivica
AU  - Savić, Ilija
AU  - Sebek, J.
AU  - Santava, E.
AU  - Svoboda, Pavel
AU  - Marincev, D.
AU  - Kohout, S.
AU  - Keller, Hugo
AU  - Feher, A.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6671
AB  - In order to shed more light on the character of magnetic correlations at low temperatures in CaRuO3, the delicate effect of substituting nonmagnetic Ti4+ for Ru4+ in low concentrations (0.5-15%) has been investigated by magnetization, AC-susceptibility and specific heat measurements. Despite the clear features in magnetic measurement data at 34K no specific heat anomaly has been observed, nevertheless, two temperature regions with different magnetic characters have been identified. . In pure CaRuO3 sisignificant low-temperature upturn of C/T is visible below 15 K. This feature is suppressed by Ti substitution. (c) 2007 Elsevier B.V. All rights reserved.
T2  - Journal of Magnetism and Magnetic Materials
T1  - Influence of Ti4+ on the magnetic state of CaRu1-xTixO3
VL  - 316
IS  - 2
SP  - E699
EP  - E702
DO  - 10.1016/j.jmmm.2007.03.065
ER  - 

@article{
author = "Zorkovska, A. and Baran, A. and Bradarić, Ivica and Savić, Ilija and Sebek, J. and Santava, E. and Svoboda, Pavel and Marincev, D. and Kohout, S. and Keller, Hugo and Feher, A.",
year = "2007",
abstract = "In order to shed more light on the character of magnetic correlations at low temperatures in CaRuO3, the delicate effect of substituting nonmagnetic Ti4+ for Ru4+ in low concentrations (0.5-15%) has been investigated by magnetization, AC-susceptibility and specific heat measurements. Despite the clear features in magnetic measurement data at 34K no specific heat anomaly has been observed, nevertheless, two temperature regions with different magnetic characters have been identified. . In pure CaRuO3 sisignificant low-temperature upturn of C/T is visible below 15 K. This feature is suppressed by Ti substitution. (c) 2007 Elsevier B.V. All rights reserved.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "Influence of Ti4+ on the magnetic state of CaRu1-xTixO3",
volume = "316",
number = "2",
pages = "E699-E702",
doi = "10.1016/j.jmmm.2007.03.065"
}

Zorkovska, A., Baran, A., Bradarić, I., Savić, I., Sebek, J., Santava, E., Svoboda, P., Marincev, D., Kohout, S., Keller, H.,& Feher, A.. (2007). Influence of Ti4+ on the magnetic state of CaRu1-xTixO3. in Journal of Magnetism and Magnetic Materials, 316(2), E699-E702.
https://doi.org/10.1016/j.jmmm.2007.03.065

Zorkovska A, Baran A, Bradarić I, Savić I, Sebek J, Santava E, Svoboda P, Marincev D, Kohout S, Keller H, Feher A. Influence of Ti4+ on the magnetic state of CaRu1-xTixO3. in Journal of Magnetism and Magnetic Materials. 2007;316(2):E699-E702.
doi:10.1016/j.jmmm.2007.03.065 .

Zorkovska, A., Baran, A., Bradarić, Ivica, Savić, Ilija, Sebek, J., Santava, E., Svoboda, Pavel, Marincev, D., Kohout, S., Keller, Hugo, Feher, A., "Influence of Ti4+ on the magnetic state of CaRu1-xTixO3" in Journal of Magnetism and Magnetic Materials, 316, no. 2 (2007):E699-E702,
https://doi.org/10.1016/j.jmmm.2007.03.065 . .

TY  - JOUR
AU  - Zorkovska, A
AU  - Orendac, M
AU  - Sebek, J
AU  - Santava, E
AU  - Svoboda, Pavel
AU  - Bradarić, Ivica
AU  - Savić, Ilija
AU  - Feher, A
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2942
AB  - Specific heat of layered NaxCoO2 (x=0.65, 0.70, and 0.75) oxides has been measured in the temperature range of 3-360 K and magnetic fields of 0 and 9 T. The analysis of data, assuming the combined effect of interlayer superexchange and the phase separation into mesoscopic magnetic domains with localized spins embedded in a matrix with an itinerant electronic character, suggests that the dominant contribution to the specific heat in the region of short-range ordering is mediated by quasi-two-dimensional antiferromagnetic clusters, perpendicular to the CoO2 layers.
T2  - Physical Review B: Condensed Matter and Materials Physics
T1  - Interplay between mesoscopic phase separation and bulk magnetism in the layered NaxCoO2
VL  - 72
IS  - 13
DO  - 10.1103/PhysRevB.72.132412
ER  - 

@article{
author = "Zorkovska, A and Orendac, M and Sebek, J and Santava, E and Svoboda, Pavel and Bradarić, Ivica and Savić, Ilija and Feher, A",
year = "2005",
abstract = "Specific heat of layered NaxCoO2 (x=0.65, 0.70, and 0.75) oxides has been measured in the temperature range of 3-360 K and magnetic fields of 0 and 9 T. The analysis of data, assuming the combined effect of interlayer superexchange and the phase separation into mesoscopic magnetic domains with localized spins embedded in a matrix with an itinerant electronic character, suggests that the dominant contribution to the specific heat in the region of short-range ordering is mediated by quasi-two-dimensional antiferromagnetic clusters, perpendicular to the CoO2 layers.",
journal = "Physical Review B: Condensed Matter and Materials Physics",
title = "Interplay between mesoscopic phase separation and bulk magnetism in the layered NaxCoO2",
volume = "72",
number = "13",
doi = "10.1103/PhysRevB.72.132412"
}

Zorkovska, A., Orendac, M., Sebek, J., Santava, E., Svoboda, P., Bradarić, I., Savić, I.,& Feher, A.. (2005). Interplay between mesoscopic phase separation and bulk magnetism in the layered NaxCoO2. in Physical Review B: Condensed Matter and Materials Physics, 72(13).
https://doi.org/10.1103/PhysRevB.72.132412

Zorkovska A, Orendac M, Sebek J, Santava E, Svoboda P, Bradarić I, Savić I, Feher A. Interplay between mesoscopic phase separation and bulk magnetism in the layered NaxCoO2. in Physical Review B: Condensed Matter and Materials Physics. 2005;72(13).
doi:10.1103/PhysRevB.72.132412 .

Zorkovska, A, Orendac, M, Sebek, J, Santava, E, Svoboda, Pavel, Bradarić, Ivica, Savić, Ilija, Feher, A, "Interplay between mesoscopic phase separation and bulk magnetism in the layered NaxCoO2" in Physical Review B: Condensed Matter and Materials Physics, 72, no. 13 (2005),
https://doi.org/10.1103/PhysRevB.72.132412 . .

TY  - JOUR
AU  - Zorkovska, A
AU  - Vlcek, A
AU  - Orendac, M
AU  - Feher, A
AU  - Sebek, J
AU  - Santava, E
AU  - Svoboda, Pavel
AU  - Bradarić, Ivica
AU  - Savić, Ilija
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6495
AB  - Specific heat of the layered Na0.65CoO2 powder sample over the temperature region of 3-360 K has been studied. Features hinting at charge ordering below room-temperature were observed. Magnetic phase transition at 28 K as well as signs of short-range ordering confirm the 2D character of magnetism with weak inter-planar coupling in the system. Comparison to different 2D antiferromagnetic models suggests that the magnetic lattice is more square- than triangular-like, what could be favoured by the charge ordering.
T2  - Czechoslovak Journal of Physics
T1  - Thermodynamic properties of Na0.65CoO2
VL  - 54
SP  - D539
EP  - D542
DO  - 10.1007/s10582-004-0138-8
ER  - 

@article{
author = "Zorkovska, A and Vlcek, A and Orendac, M and Feher, A and Sebek, J and Santava, E and Svoboda, Pavel and Bradarić, Ivica and Savić, Ilija",
year = "2004",
abstract = "Specific heat of the layered Na0.65CoO2 powder sample over the temperature region of 3-360 K has been studied. Features hinting at charge ordering below room-temperature were observed. Magnetic phase transition at 28 K as well as signs of short-range ordering confirm the 2D character of magnetism with weak inter-planar coupling in the system. Comparison to different 2D antiferromagnetic models suggests that the magnetic lattice is more square- than triangular-like, what could be favoured by the charge ordering.",
journal = "Czechoslovak Journal of Physics",
title = "Thermodynamic properties of Na0.65CoO2",
volume = "54",
pages = "D539-D542",
doi = "10.1007/s10582-004-0138-8"
}

Zorkovska, A., Vlcek, A., Orendac, M., Feher, A., Sebek, J., Santava, E., Svoboda, P., Bradarić, I.,& Savić, I.. (2004). Thermodynamic properties of Na0.65CoO2. in Czechoslovak Journal of Physics, 54, D539-D542.
https://doi.org/10.1007/s10582-004-0138-8

Zorkovska A, Vlcek A, Orendac M, Feher A, Sebek J, Santava E, Svoboda P, Bradarić I, Savić I. Thermodynamic properties of Na0.65CoO2. in Czechoslovak Journal of Physics. 2004;54:D539-D542.
doi:10.1007/s10582-004-0138-8 .

Zorkovska, A, Vlcek, A, Orendac, M, Feher, A, Sebek, J, Santava, E, Svoboda, Pavel, Bradarić, Ivica, Savić, Ilija, "Thermodynamic properties of Na0.65CoO2" in Czechoslovak Journal of Physics, 54 (2004):D539-D542,
https://doi.org/10.1007/s10582-004-0138-8 . .