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  Tuning a sign of magnetoelectric coupling in paramagnetic NH2(CH3)2Al1-xCrx(SO4)2 x 6H2O crystals by metal ion substitution

Kapustianyk, V., Eliyashevskyy, Y., Czapla, Z., Rudyk, V., Serkiz, R., Ostapenko, N., et al. (2017). Tuning a sign of magnetoelectric coupling in paramagnetic NH2(CH3)2Al1-xCrx(SO4)2 x 6H2O crystals by metal ion substitution. Scientific Reports, 7: 14109, pp. 1-8. doi:10.1038/s41598-017-14388-8.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-28F7-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-9CA8-2
Genre: Journal Article

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 Creators:
Kapustianyk, V.1, Author
Eliyashevskyy, Yu.1, Author
Czapla, Z.1, Author
Rudyk, V.1, Author
Serkiz, R.1, Author
Ostapenko, N.1, Author
Hirnyk, I.1, Author
Dayen, J.-F.1, Author
Bobnar, M.2, Author              
Gumeniuk, R.1, Author
Kundys, B.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              

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 Abstract: Hybrid organometallic systems offer a wide range of functionalities, including magnetoelectric (ME) interactions. However, the ability to design on-demand ME coupling remains challenging despite a variety of host-guest configurations and ME phases coexistence possibilities. Here, we report the effect of metal-ion substitution on the magnetic and electric properties in the paramagnetic ferroelectric NH2(CH3)(2)Al1-xCrx(SO4)(2) x 6H(2)O. Doing so we are able to induce and even tune a sign of the ME interactions, in the paramagnetic ferroelectric (FE) state. Both studied samples with x = 0.065 and x = 0.2 become paramagnetic, contrary to the initial diamagnetic compound. Due to the isomorphous substitution with Cr the ferroelectric phase transition temperature (T-c) increases nonlinearly, with the shift being larger for the 6.5% of Cr. A magnetic field applied along the polar c axis increases ferroelectricity for the x = 0.065 sample and shifts Tc to higher values, while inverse effects are observed for x = 0.2. The ME coupling coefficient alpha(ME) = 1.7 ns/m found for a crystal with Cr content of x = 0.2 is among the highest reported up to now. The observed sign change of aME with a small change in Cr content paves the way for ME coupling engineering.

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Language(s): eng - English
 Dates: 2017-10-262017-10-26
 Publication Status: Published in print
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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 7 Sequence Number: 14109 Start / End Page: 1 - 8 Identifier: ISSN: 2045-2322
CoNE: /journals/resource/2045-2322