Article

Pressure-induced modifications of the magnetic order in the spin-chain compound <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi mathvariant="normal">C</mml:mi><mml:msub><mml:mi mathvariant="normal">a</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mi mathvariant="normal">C</mml:mi><mml:msub><mml:mi mathvariant="normal">o</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>

Д. П. КозленкоFrank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, RussiaN. T. DangInstitute of Research and Development, Duy Tan University, 550000 Da Nang, VietnamN. O. GolosovaFrank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, RussiaС. Е. КичановFrank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, RussiaЕ. В. ЛукинFrank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, RussiaPaige KelleyDepartment of Physics, University of South Florida, Tampa, Florida 33620, USAEleanor M. ClementsDepartment of Physics, University of South Florida, Tampa, Florida 33620, USAKonstantin GlazyrinPhoton Sciences, Deutsches Elektronen Synchrotron, D-22607 Hamburg, GermanyS. H. JabarovInstitute of Physics, Azerbaijan National Academy of Sciences, Baku, AzerbaijanThe‐Long PhanDepartment of Physics and Oxide Research Center, Hankuk University of Foreign Studies, Yongin, South KoreaБ. Н. СавенкоFrank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, RussiaH. SrikanthDepartment of Physics, University of South Florida, Tampa, Florida 33620, USAManh‐Huong PhanDepartment of Physics, University of South Florida, Tampa, Florida 33620, USA

2018lv

ABI

Abstract

The structural and magnetic properties of the $\mathrm{C}{\mathrm{a}}_{3}\mathrm{C}{\mathrm{o}}_{2}{\mathrm{O}}_{6}$ spin-chain compound have been studied by means of neutron and x-ray powder diffraction at pressures up to 6.8 and 32 GPa, respectively. A suppression of the initial spin-density wave state $({T}_{\mathrm{N}}=25\phantom{\rule{0.28em}{0ex}}\mathrm{K})$ and stabilization of the collinear commensurate antiferromagnetic (AFM) state at high pressures $({T}_{\mathrm{NC}}=26\phantom{\rule{0.28em}{0ex}}\mathrm{K}$ at $P=2.1$ GPa) were observed. The pressure behavior of the competing intra- and interchain magnetic interactions was analyzed on the basis of obtained structural data and their role in the formation of the magnetic phase diagram is discussed. The pressure behavior of the N\'eel temperature of the commensurate AFM phase was evaluated within the mean field theory approach and a good agreement with the experimental value $d{T}_{\mathrm{NC}}/dP=0.65\phantom{\rule{0.28em}{0ex}}\mathrm{K}/\mathrm{GPa}$ was obtained.

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Identifiers

DOI: 10.1103/physrevb.98.134435

Citations and references

Cited by 20 references

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