Agustinus Agung Nugroho

Agustinus Agung Nugroho

Personal Information

Undergraduate Degree: Institut Teknologi Bandung, 1993
Master Degree, Diploma: International Center for Theoretical Physics, Trieste, Italy, 1995
Doctoral Degree: Universiteit van Amsterdam, The Netherlands, 2001
Post Doctoral: Rijkuniversiteit Groningen, 2002-2004

Email: nugroho[at]fi.itb.ac.id

Research

Study of Magnetic Properties of Organic-Inorganic Hybrids

fig1

The crystallographic structure of Cu-PEA (a,c and d) based n the single-crystal diffraction described in A. O. Polyakov, et al., Chem. Mater.  24, 133 (2012). The single-crystal of Cu-PEA was grown by Mimin and D. Onggo (Chemistry Dept. ITB) shown in (b).

The flexibility to manipulate the organic molecule in organic-inorganic hybrids has attracted much attention to explore the functionality of this class of material. One of the interesting series of the organic-inorganic is the magnetic hybrids with perovskite type transition-metal salt C6H5(CH2)nNH3MCl4 with M is a divalent transition metal ion. The interlayer spacing of between the transition metal salt, MCl4.can be varied depending on value of n. The magnetic susceptibility measurement of those hybrids has shown very clearly the existence of 3D long range ordering and the 2D short range ordering at higher temperature. The existence of strong interlayer coupling of well separated 2D of the inorganic part of about 2nm at relatively high temperature is very unusual phenomena in magnetism.

We propose in this project a systematic study on the role of the organic molecule bridging the magnetic interaction between the transition metal salt in C6H5(CH2)nNH3MCl4 hybrids. In particular, we will use the muon spin relaxation (muSR) to investigate the spin dynamics of the organic-inorganic hybrid. The magnetic susceptibility measurements of those hybrids have shown very clearly the existence of 3D long range ordering. The results will elucidate how such interlayer coupling can be achieved in these hybrids and generally will highlight the crucial parameters to design a high temperature magnetic of hybrids system.

Publications

Teaching

  • Elementary Physics
  • Waves
  • Thermodynamics
  • Functional materials
  • Characterization technique of materials