The DOI matches its Crossref record.
Synthesis, Characterization, and Magnetic Properties of Cobalt Nanoparticles from an Organometallic Precursor
Abstract
THF solutions of the new organometallic precursor Co(η 3 -C 8 H 13 )(η 4 -C 8 H 12 ) react with 3 bar dihydrogen in the presence of polyvinylpyrrolidone (PVP) at three different temperatures, namely, 0, 20, and 60 °C to give colloidal solutions containing fcc cobalt particles of respectively ≤1 nm ( Coll. 1 ) and ca. 1.5 nm ( Coll. 2 and Coll. 3 ) mean sizes, as evidenced by HREM analysis. All colloids react with carbon monoxide to give new colloids ( Coll. 1 ‘ − 3 ‘ ) displaying broad CO stretches near 2000 and 1890 cm -1 on their infrared spectra recorded in KBr disks. The magnetic behavior of the colloids was studied by SQUID techniques. Coll. 1 − 3 display a typical superparamagnetic behavior with blocking temperatures in the range 9−10 K. From magnetization studies above and below the blocking temperature, it was possible to determine that Coll. 3 shows a mean size of 1.6 nm and a very narrow size distribution. Because of a magnetic surface effect, the magnetic moment per atom (μ Co = 1.94 ± 0.04 μ B ) appears significantly larger than the value admitted for bulk cobalt. In contrast, Coll. 2 ‘ shows a weak magnetization and disappearance of the blocking temperature as a result of CO coordination.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Chemistry and Properties of Nanocrystals of Different Shapes
Burda, C., Chen, X., Narayanan, R., & El-Sayed, M. A. (2005) · Chemical Reviews · doi:10.1021/cr030063a · Cited by 7,230
Laurent, S., Forge, D., Port, M., Roch, A., Robic, C., Vander Elst, L., & Muller, R. N. (2008) · Chemical Reviews · doi:10.1021/cr068445e · Cited by 6,852
Synthesis, structure and properties of metal nanoclusters
Wilcoxon, J. P., & Abrams, B. L. (2006) · Chemical Society Reviews · doi:10.1039/b517312b · Cited by 760
The use of magnetic nanoparticles in sample preparation devices and tools
Keçili, R., Büyüktiryaki, S., Dolak, İ., & Hussain, C. M. (2020) · Handbook of Nanomaterials in Analytical Chemistry · doi:10.1016/b978-0-12-816699-4.00005-0 · Cited by 64
Tunable synthetic approaches for the optimization of nanostructured fuel cell catalysts: An overview
Bönnemann, H., & Nagabhushana, K. S. (2004) · Hemijska industrija · doi:10.2298/hemind0406271b · Cited by 6
Metadata
- Authors
- Osuna, J., de Caro, D., Amiens, C., Chaudret, B., Snoeck, E., Respaud, M., Broto, J.-M., & Fert, A.
- Venue
- The Journal of Physical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 1996-01-01
- Volume
- 100
- Issue
- 35
- Pages
- 14571-14574
- ISSN
- 0022-3654 (ISSN-L)
- 1541-5740
- OpenAlex
- W2028281073
- Cited by
- 223
- References
- 0
- FWCI
- 5.40
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Synthesis, Characterization, and Magnetic Properties of Cobalt Nanoparticles from an Organometallic Precursor. https://app.cochat.ai/papers/10.1021/jp961086e
- The paper
- Osuna, J., de Caro, D., Amiens, C., Chaudret, B., Snoeck, E., Respaud, M., Broto, J.-M., & Fert, A. (1996). Synthesis, Characterization, and Magnetic Properties of Cobalt Nanoparticles from an Organometallic Precursor. The Journal of Physical Chemistry. https://doi.org/10.1021/jp961086e
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
