Karel Knížek

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Researcher in the Laboratory of Oxide Materials, Institute of Physics of the CAS, Prague. Telephone, E-mail. Graduated: 1984 - 1989: Inorganic chemistry at the Faculty of Natural Sciences, Charles University, Prague. PhD: 1991 - 1995: Inorganic chemistry at the Department of Inorganic chemistry, University of Chemical Technology, Prague. ResearcherID: G-5270-2014

Employment and foreign stays:

• 1990 - 1991: Institute of Physics of the CAS, Laboratory of Oxide Materials, Prague
• 1991 - 1994: University of Chemical Technology, Prague
• from 1994: Institute of Physics of the CAS, Laboratory of Oxide Materials, Prague
• 1995 - 1996: One year at the Laboratoire CRISMAT, CNRS, Caen, France.
• 1999: Six months at the Stockholm University, Arrhenius Laboratory, Sweden.
• 2000: Six months at the Stockholm University, Arrhenius Laboratory.
• 2005: One month at the University of Oslo, Department of Chemistry, Norway.

Research

• Spin Seebeck effect in hexagonal ferrites.
• Spin transitions and related structure anomalies in Co-perovskites LnCoO₃ (Ln = La, Y, rare-earth). Determination of the character of the excited spin state of Co³⁺ ion and interpretation of the magnetic and metal-insulator transitions based on the LS-LS/HS-IS model with the help of electronic structure calculation and measurements of thermal dilatation and magnetic susceptibility.
• Structure properties of Y-type hexaferrites (BaSr)₂Zn₂Fe₁₂O₂₂ and their relation to ferroelectric properties and conductivity.
• Determination of the grain size of the magnetic nanoparticles with the help of X-ray diffraction.
• Magnetic, charge and orbital ordering in Mn-perovskites.
• X-ray diffraction and structure refinement over the temperature range 90 - 1200 K.
• Electronic structure calculation using the Wien2k program package.
• Software for thermoelectric properties measurement.

Publications

Kalvados - software for crystal structure and powder diffraction

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Přednášky

(česky, in Czech)

• Krystalochemie (ÚACH FCHT VŠCHT Praha)
• Chemické aspekty pevných látek (KIPL FJFI ČVUT Praha)

Popularizace

(česky, in Czech)

• Supravodivost a levitace.

• Češi se podíleli na vývoji nového materiálu pro operační paměti, Lidové noviny 23.7.2010
  Čeští vědci zjistili, jak na materiály s unikátními schopnostmi, ČT24, 22.8.2010
  K. Z. Rushchanskii, S. Kamba, V. Goian, P. Vaněk, M. Savinov, J. Prokleška, D. Nuzhnyy, K. Knížek, F. Laufek, S. Eckel, S. K. Lamoreaux, A. O. Sushkov, M. Ležaić, N. A. Spaldin, A multiferroic material to search for the permanent electric dipole moment of the electron, Nat. Materials 9, 649 (2010).

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[ Laboratory of
  Oxide Materials ]

[ Research ]
  [ Thermoelectrics ]
  [ Magn. nanoparticles ]
  [ Spin Seebeck effect ]
  [ Co-perovskites ]
  [ Mn-perovskites ]
  [ Cu-superconductors ]
  [ DMS ]
  [ Hexaferrites ]

[ Equipment ]
  [ Thermoelectricity ]
  [ Diffraction ]
  [ MPMS&PPMS ]
  [ Synthesis ]
  [ DFT ]

[ Publications ]

[ Staff ]

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[ Laboratoř
  oxidových materiálů ]

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[ Krystalochemie ]
[ CHAPL ]
[ Kalvados ]

Staff

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Zdenek Jirak
Jiri Hejtmanek
Karel Knizek

	Laboratory of Oxide Materials [ Department of Magnetics and Superconductors ]
	[ Division of Solid State Physics ] [ Institute of Physics of the CAS ] [ Czech Academy of Sciences ]

Last change: 7. 1. 2019 (K. Knížek)