Investigation of temperature-dependent structural and magnetic phase transitions in CrCl3 nanocrystals

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F25%3A00635747" target="_blank" >RIV/61388955:_____/25:00635747 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/25:10497687

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0925838825020298?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925838825020298?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2025.180468" target="_blank" >10.1016/j.jallcom.2025.180468</a>

Result language

angličtina

Original language name

Investigation of temperature-dependent structural and magnetic phase transitions in CrCl3 nanocrystals

Original language description

We investigated the structural, vibrational, and magnetic properties of CrCl3 plate-like nanocrystals on Si/SiO2 substrates, synthesized via vapor transport, across a broad temperature range (2-300 K) to elucidate structural and magnetic phase transitions. X-ray diffraction analysis identified rhombohedral and monoclinic phases, with temperature-variable ratio. Unexpectedly, the high-temperature (monoclinic) phase persisted in coexistence with the low-temperature (rhombohedral) phase down to the lowest accessed temperature. Magnetic susceptibility measurements under different magnetic field orientations (B||c and Bic) showed distinct features at 14 K and 17 K, confirming a two-step magnetic ordering. Polarization-resolved Raman spectroscopy under varying temperature revealed significant changes in the peak positions, full-width at half maximum (FWHM), and intensity ratios, which was consistent with the proposed structural and magnetic phase transitions. Analysis of the polarization ratio highlighted anisotropic contributions linked to the structural phase transitions, showing a gradual transformation from the rhombohedral to the monoclinic phase with temperature, as corroborated by the X-ray diffraction study. The observed temperature dependence of the structural, magnetic and vibrational properties underscores the interplay between structural phase transitions and spin-lattice coupling in CrCl3. In particular, the high temperature phase persists far below the magnetic ordering temperature in the nanocrystals (the ratio of the monoclinic to the rhombohedral phase below 10 K is still about 2:3, as revealed by the X-ray diffraction analysis). Our findings offer a comprehensive understanding of the structural-magnetic correlation in CrCl3 and point to the possibility of the phase coexistence in the chromium trihalides in the form of plate-like nanocrystals.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

1873-4669

Volume of the periodical

1027

Issue of the periodical within the volume

MAY 2025

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

7

Pages from-to

180468

UT code for WoS article

001479779500001

EID of the result in the Scopus database

2-s2.0-105003202257