Skip to main content
SpringerLink
Log in

Study of the reaction K4Fe(CN)6·3H2O→K4Fe(CN)6+3H2O by the derivatograph and dielectric constant measurements

  • Published:
Journal of thermal analysis Aims and scope Submit manuscript

Abstract

K4Fe(CN)6·3H2O was studied by a derivatograph in the temperature range +20° to +300° and dielectric constant (ε) measured from −80° to +150°. The loss of the three water molecules occurs at 105° and theε vs T curve shows a Debye relaxation behavior. By using Mason's theory it was possible to classify K4Fe(CN)6·3H2O in the temperature range −25° to +100° C as a para-electric order-disorder crystal.

Résumé

Etude de K4Fe(CN)6·3H2O à l'aide d'un «Derivatograph» entre +20 et +300° mesure de la constante diélectrique (ε) entre −80 et+150°. La perte des trois molécules d'eau a lieu à 105° et la courbeε en fonction deT montre un comportement de relaxation Debye. D'après la théorie de Mason, il est possible de classer K4Fe(CN)6·3H2O comme cristal paraélectrique ordre-désordre entre −25 et +100°.

Zusammenfassung

K4[Fe(CN)6].3 H2O wurde mit dem Derivatograph im Temperaturbereich von+20° bis+300° untersucht und die dielektrische Konstante (ε) im Bereich von −80° und +150° gemessen. Die Abspaltung der drei Wassermoleküle erfolgt bei 105°. Die Kurve vonε als Funktion vonT zeigt ein Relaxationsverhalten nach Debye. Bei Anwendung der Theorie von Mason gelang es K4[Fe(CN)6].3 H2O im Temperaturbereich von −25° bis 100° als para-elektrischen, geordneten-ungeordneten Kristall einzuordnen.

Резюме

С помощью дериватогр афа была изучена соль K4[Fe(CN)6] · 3H2O в области температур от +20° до +300° и для которой была изме рена диэлектрическая кон станта в области температур о т −80° до +150°. Потеря трех м олекул воды происходит при 105°, а кривая в координатахε-T показывает дебаев ское релаксационное пове дение. Представилось возможным, используя теорию Масона, класси фицировать K4[Fe(CN)6] · 3H2O в области температур от −25° до +100° как параэлектрическ ий упорядоченноразори ентированный кристалл.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. I. R.Bonilla, P.da R.Andrade and A.Bristoti, to be published in J. Thermal Anal.

  2. P. Debye, Polar Molecules, Cham. Cat. Co., New York, 1929.

    Google Scholar 

  3. P. da R. Andrade andS. P. S. Porto, Rev. Materials Science, 4 (1974) 287.

    Google Scholar 

  4. W. P. Mason, Phys. Rev., 72 (1947) 854.

    Google Scholar 

  5. D. E. Reilly andT. Tsang, J. Chem. Phys., 47 (1967) 4072.

    Google Scholar 

  6. A. Ya. Krasnikova et al., Soviet Physics, Solid State, 9 (1967) 185.

    Google Scholar 

  7. S. Waku et al., J. Phys. Soc. Japan, 14 (1959) 973.

    Google Scholar 

  8. R. Kiriyama et al., J. Phys. Soc. Japan, 19 (1964) 540.

    Google Scholar 

  9. H. N.Rutt and I. R.Bonilla, to be published in J. Scientific Instruments.

  10. A. Abragam, The Principles of Nuclear Magnetism, chap. X, Oxford University Press, London, 1961.

    Google Scholar 

  11. C. P. Slichter, Principle of Magnetic Resonance Harper and Row Publishers, New York, 1963.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Instituto de Fisica, Universidade Federal do Rio Grande do Sul, 90.000, Porto Alegre, RS, Brazil

    A. Bristoti, I. R. Bonilla & P. da R. Andrade

Authors
  1. A. Bristoti
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. I. R. Bonilla
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. P. da R. Andrade
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Work partially supported by Banco Nacional de Desenvolvimento Econômico and Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul.

P. da R. Andrade deceased on December 16, 1974.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Bristoti, A., Bonilla, I.R. & Andrade, P.d.R. Study of the reaction K4Fe(CN)6·3H2O→K4Fe(CN)6+3H2O by the derivatograph and dielectric constant measurements. Journal of Thermal Analysis 9, 93–99 (1976). https://doi.org/10.1007/BF01909270

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01909270

Keywords

Search

Navigation