Structural and magnetic properties of Prussian blue analogue molecular magnet Fe{sub 1.5}[Cr(CN){sub 6}]·mH{sub 2}O

Journal Article · Mon May 23 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4948203· OSTI ID:22608898

Bhatt, Pramod; Meena, S. S.; Mukadam, M. D.; Yusuf, S. M. ^[1]

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1. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India)

Molecular magnets, based on Prussian blue analogues, Fe{sub 1.5}[Cr(CN){sub 6}]·mH{sub 2}O have been synthesized in the bulk as well as nanoparticle forms using a co-precipitation method, and their structural and magnetic properties have been investigated using x-ray diffraction (XRD) Mössbauer spectroscopy and dc magnetization. The XRD study confirms the single phase crystalline and nanoparticle nature of the compounds with a face centered cubic (fcc) structure of space group Fm3m. The values of lattice constant are found to be ~10.18(5) Å and ~9.98(9)Å, for the bulk and nanoparticle samples, respectively. The dc magnetization shows a Curie temperature (T{sub C}) of ~17 K and ~5 K for the bulk and nanopartcile samples, respectively. The Mossouber spectroscopy reveal that the compound shows spin flipping from the high spin (HS) Fe (Cr{sup III}–C≡N–Fe{sup II}) to low spin (LS) Fe{sup II} ions (Cr{sup III}–N≡C–Fe{sup II}). Moreover, the T{sub C} and the HS state of the Fe ions decreases (converts to its LS states) with time as well as in the nanoparticle form compared to bulk.

• OSTI ID: 22608898
• Journal Information: AIP Conference Proceedings, Vol. 1731, Issue 1; Conference: DAE solid state physics symposium 2015, Uttar Pradesh (India), 21-25 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CARBON NITRIDES
CHROMIUM COMPOUNDS
COMPARATIVE EVALUATIONS
COPRECIPITATION
CURIE POINT
CYANIDES
FCC LATTICES
FERROCYANIDES
IRON COMPOUNDS
IRON IONS
LATTICE PARAMETERS
MAGNETIC PROPERTIES
MAGNETIZATION
MAGNETS
MOESSBAUER EFFECT
NANOPARTICLES
SPACE GROUPS
SPECTROSCOPY
SPIN
X-RAY DIFFRACTION