Karel Knížek

activity

20022026

most citedProperties of the hole and electron doped perovskites LnCoO3

79 citations · 134 across the 7 of their papers we have counts for

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7 papers · 1 filter

cond-mat.mtrl-sci2026

Thermal conductivity of CdCr $_{2}$ Se $_{4}$ ferromagnet at low temperatures: role of grain boundaries and porosity

Jiří Hejtmánek, Kyo-Hoon Ahn, Zdeněk Jirák +5

It is unambiguously demonstrated that the low temperature magnon specific heat in a ferromagnet varies as T $^{3/2}$ and the magnon thermal conductivity, due to T $^{1/2}$ - dependen…

cond-mat.mtrl-sci2025

Two-component anomalous Hall and Nernst effects in anisotropic Fe $_{4 - x}$ Ge $_{x}$ N thin films

R. K. Paul, J. Vít, P. Levinský +18

A series of thin films Fe $_{4 - x}$ Ge $_{x}$ N (x=0-1) was fabricated onto MgO substrates by magnetron sputtering with the aim of studying the possible enhancement of the anomalous Nerns…

cond-mat.mtrl-sci2013★ 19 cited

The spin-state crossover and low-temperature magnetic state in yttrium doped Pr $_{0.7}$ Ca $_{0.3}$ CoO $_{3}$

K. Knizek, J. Hejtmanek, M. Marysko +6

The structural and magnetic properties of two mixed-valence cobaltites with formal population of 0.30 Co $^{4 +}$ ions per f.u., (Pr $_{1 - y}$ Y $_{y}$ ) $_{0.7}$ Ca $_{0.3}$ CoO $_{3}$ ( $y = 0$ a…

cond-mat.mtrl-sci2012★ 20 cited

Simultaneous valence shift of Pr and Tb ions at the spin-state transition in ((Pr $_{1 - y}$ Tb $_{y})_{0.7}$ Ca $_{0.3}$ CoO $_{3}$

H. Fujishiro, T. Naito, D. Takeda +6

Temperature dependence of the X-ray absorption near-edge structure (XANES) spectra at the Pr $L_{3}$ - and Tb $L_{3}$ -edges was measured for the (Pr $_{1 - y}$ Tb $_{y})_{0.7}$ Ca $_{0.3}$ …

cond-mat.mtrl-sci2012★ 14 cited

The ground state properties of the mixed-valence cobaltites Nd $_{0.7}$ Sr $_{0.3}$ CoO $_{3}$ , Nd $_{0.7}$ Ca $_{0.3}$ CoO $_{3}$ and Pr $_{0.7}$ Ca $_{0.3}$ CoO $_{3}$

Z. Jirak, J. Hejtmanek, K. Knizek +5

The electric, magnetic, and thermal properties of three perovskite cobaltites with the same 30% hole doping and ferromagnetic ground state were investigated down to very low temper…

cond-mat.mtrl-sci2008★ 79 cited

Properties of the hole and electron doped perovskites LnCoO3

Z. Jirak, J. Hejtmanek, K. Knizek +1

Two extreme members of the cobaltite series, LaCoO3 and DyCoO3, were investigated by the electrical resistivity and thermopower measurements up to 800-1000 K. Special attention was…

cond-mat.mtrl-sci2002★ 2 cited

The magnetoresistive behavior of Cr-doped manganites Pr0.44Sr0.56MnO3

Z. Jirak, J. Hejtmanek, K. Knizek +4

A complex structural, magnetic and electric transport investigation shows that the Cr doping on Mn sites in the A-type antiferromagnet Pr0.44Sr0.56MnO3 provokes a non-uniform magne…

Thermal conductivity of CdCr2​Se4​ ferromagnet at low temperatures: role of grain boundaries and porosity

Two-component anomalous Hall and Nernst effects in anisotropic Fe4−x​Gex​N thin films

The spin-state crossover and low-temperature magnetic state in yttrium doped Pr0.7​Ca0.3​CoO3​

Simultaneous valence shift of Pr and Tb ions at the spin-state transition in ((Pr1−y​Tby​)0.7​Ca0.3​CoO3​

The ground state properties of the mixed-valence cobaltites Nd0.7​Sr0.3​CoO3​, Nd0.7​Ca0.3​CoO3​ and Pr0.7​Ca0.3​CoO3​