TY  - JOUR
AU  - Felner, I
AU  - Asaf, U
AU  - Nowik, I
AU  - Bradarić, Ivica
PY  - 2002
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2545
AB  - CaRuO3 is a perovskite with an orthorhombic distortion and shows the characteristics of spin-glass behavior below T-C=87 K. Magnetic studies of polycrystalline CaRu1-xTixO3 (0 LT x LT 0.1) reveal that a ferromagnetic transition at T-C=34 K appears regardless of the nonmagnetic Ti concentration. On the other hand, magnetic and Mossbauer effect studies show that T-C of CaRu1-xFexO3 (up to x=0.15) is similar to that of pure CaRuO3: however, the Fe induces a ferromagnetic structure. Charge compensation, which is assumed to be present upon Fe3+ substitution, induces the appearance of low-spin Ru5+ ions, which reduce the paramagnetic moment. Huge magnetic hysteresis loops are observed at 5 K, with coercive fields up to 30 kOe. A second magnetic transition around 250 K is observed for Fe concentrations of x=0.25 and 0.35, which is probably caused by Fe-rich clusters. This behavior is consistent with inhomogeneous ferromagnetism found in other perovskite systems.
T2  - Physical Review B: Condensed Matter and Materials Physics
T1  - Magnetic and Mossbauer studies of CaRu(1-)xM(x)O(3) (M = Ti and Fe)
VL  - 66
IS  - 5
DO  - 10.1103/PhysRevB.66.054418
ER  - 

@article{
author = "Felner, I and Asaf, U and Nowik, I and Bradarić, Ivica",
year = "2002",
abstract = "CaRuO3 is a perovskite with an orthorhombic distortion and shows the characteristics of spin-glass behavior below T-C=87 K. Magnetic studies of polycrystalline CaRu1-xTixO3 (0 LT x LT 0.1) reveal that a ferromagnetic transition at T-C=34 K appears regardless of the nonmagnetic Ti concentration. On the other hand, magnetic and Mossbauer effect studies show that T-C of CaRu1-xFexO3 (up to x=0.15) is similar to that of pure CaRuO3: however, the Fe induces a ferromagnetic structure. Charge compensation, which is assumed to be present upon Fe3+ substitution, induces the appearance of low-spin Ru5+ ions, which reduce the paramagnetic moment. Huge magnetic hysteresis loops are observed at 5 K, with coercive fields up to 30 kOe. A second magnetic transition around 250 K is observed for Fe concentrations of x=0.25 and 0.35, which is probably caused by Fe-rich clusters. This behavior is consistent with inhomogeneous ferromagnetism found in other perovskite systems.",
journal = "Physical Review B: Condensed Matter and Materials Physics",
title = "Magnetic and Mossbauer studies of CaRu(1-)xM(x)O(3) (M = Ti and Fe)",
volume = "66",
number = "5",
doi = "10.1103/PhysRevB.66.054418"
}

Felner, I., Asaf, U., Nowik, I.,& Bradarić, I.. (2002). Magnetic and Mossbauer studies of CaRu(1-)xM(x)O(3) (M = Ti and Fe). in Physical Review B: Condensed Matter and Materials Physics, 66(5).
https://doi.org/10.1103/PhysRevB.66.054418

Felner I, Asaf U, Nowik I, Bradarić I. Magnetic and Mossbauer studies of CaRu(1-)xM(x)O(3) (M = Ti and Fe). in Physical Review B: Condensed Matter and Materials Physics. 2002;66(5).
doi:10.1103/PhysRevB.66.054418 .

Felner, I, Asaf, U, Nowik, I, Bradarić, Ivica, "Magnetic and Mossbauer studies of CaRu(1-)xM(x)O(3) (M = Ti and Fe)" in Physical Review B: Condensed Matter and Materials Physics, 66, no. 5 (2002),
https://doi.org/10.1103/PhysRevB.66.054418 . .

TY  - JOUR
AU  - Felner, I
AU  - Nowik, I
AU  - Bradarić, Ivica
AU  - Gospodinov, M
PY  - 2000
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2389
AB  - Magnetic studies of ceramic and single crystal CaRuO3 samples demonstrate that irreversibility appears in the zero-field-cooled field-cooled curves only when measured at low applied magnetic fields. A small hysteresis loop opens at low temperatures, and the remanent magnetization decreases with temperature and disappears at similar to 90 and 71 K for the ceramic and crystal samples, respectively. The easy axis for the magnetization is in the [001]. Mossbauer studies of 1% Fe-57 doped in CaRuO3 show a magnetic sextet at 4.1 K which disappears at 90 K. It is proposed that CaRuO3 is not paramagnetic, but rather shows the characteristics of short range magnetic interactions, possibly as spin-glass-like behavior. Fe-57 ions experience an exchange field from their magnetic Ru neighbors and also become magnetically ordered.
T2  - Physical Review B: Condensed Matter and Materials Physics
T1  - CaRuO3 is not a paramagnetic material
VL  - 62
IS  - 17
SP  - 11332
EP  - 11335
DO  - 10.1103/PhysRevB.62.11332
ER  - 

@article{
author = "Felner, I and Nowik, I and Bradarić, Ivica and Gospodinov, M",
year = "2000",
abstract = "Magnetic studies of ceramic and single crystal CaRuO3 samples demonstrate that irreversibility appears in the zero-field-cooled field-cooled curves only when measured at low applied magnetic fields. A small hysteresis loop opens at low temperatures, and the remanent magnetization decreases with temperature and disappears at similar to 90 and 71 K for the ceramic and crystal samples, respectively. The easy axis for the magnetization is in the [001]. Mossbauer studies of 1% Fe-57 doped in CaRuO3 show a magnetic sextet at 4.1 K which disappears at 90 K. It is proposed that CaRuO3 is not paramagnetic, but rather shows the characteristics of short range magnetic interactions, possibly as spin-glass-like behavior. Fe-57 ions experience an exchange field from their magnetic Ru neighbors and also become magnetically ordered.",
journal = "Physical Review B: Condensed Matter and Materials Physics",
title = "CaRuO3 is not a paramagnetic material",
volume = "62",
number = "17",
pages = "11332-11335",
doi = "10.1103/PhysRevB.62.11332"
}

Felner, I., Nowik, I., Bradarić, I.,& Gospodinov, M.. (2000). CaRuO3 is not a paramagnetic material. in Physical Review B: Condensed Matter and Materials Physics, 62(17), 11332-11335.
https://doi.org/10.1103/PhysRevB.62.11332

Felner I, Nowik I, Bradarić I, Gospodinov M. CaRuO3 is not a paramagnetic material. in Physical Review B: Condensed Matter and Materials Physics. 2000;62(17):11332-11335.
doi:10.1103/PhysRevB.62.11332 .

Felner, I, Nowik, I, Bradarić, Ivica, Gospodinov, M, "CaRuO3 is not a paramagnetic material" in Physical Review B: Condensed Matter and Materials Physics, 62, no. 17 (2000):11332-11335,
https://doi.org/10.1103/PhysRevB.62.11332 . .