Magnetic studies of monoclinic Cu4O(SeO3)3, a copper-oxo-selenite derivative
Cu4O(SeO3)3 is a copper-oxo-selenite belonging to the CuxO(SeO3)(x–1) family of the topological chiral magnet Cu2OSeO3. We report magnetometry and specific heat data measured in a monoclinic Cu4O(SeO3)3 single crystal grown through a Chemical Vapour Transport (CVT) reaction. Our study shows a typica...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2020-01-01
|
| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2020/09/epjconf_cmpnc2019_01002.pdf |
| _version_ | 1818358084423122944 |
|---|---|
| author | Malta José F. Henriques Marta S.C. Paixão José A. Gonçalves António P. |
| author_facet | Malta José F. Henriques Marta S.C. Paixão José A. Gonçalves António P. |
| author_sort | Malta José F. |
| collection | DOAJ |
| description | Cu4O(SeO3)3 is a copper-oxo-selenite belonging to the CuxO(SeO3)(x–1) family of the topological chiral magnet Cu2OSeO3. We report magnetometry and specific heat data measured in a monoclinic Cu4O(SeO3)3 single crystal grown through a Chemical Vapour Transport (CVT) reaction. Our study shows a typical antiferromagnetic behaviour, with a Néel temperature TN = 58 K, similar to that of the Cu2OSeO3 and an additional transition at 13 K. The effective magnetic moment per Cu atom is 1.84 μB, close to the expected theoretical value for Cu2+. The low-temperature M(H) curves, show a transition starting at Hc1 ~ 400 Oe at 1.8 K shifting to a lower value of ~ 280 Oe at 30 K, likely from a helical into a conical intermediate phase, and a second transition at Hc2 ~ 1 kOe, above which the net moment increases linearly with applied field. The magnetisation moment value in a 90 kOe field is 0.053 μB/Cu at 1.8 K and attains a maximum value of 0.061 μB at 13 K. Low-temperature specific heat measurements confirm the presence of the magnetic transition at 13 K, slightly shifting to lower temperatures under an applied magnetic field. |
| first_indexed | 2024-12-13T20:23:23Z |
| format | Article |
| id | doaj.art-f501afd0f9fc4b29a4fccd6189d70b4f |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-13T20:23:23Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-f501afd0f9fc4b29a4fccd6189d70b4f2022-12-21T23:32:39ZengEDP SciencesEPJ Web of Conferences2100-014X2020-01-012330100210.1051/epjconf/202023301002epjconf_cmpnc2019_01002Magnetic studies of monoclinic Cu4O(SeO3)3, a copper-oxo-selenite derivativeMalta José F.Henriques Marta S.C.0Paixão José A.1Gonçalves António P.2CFisUC, Department of Physics, University of Coimbra, Rua LargaCFisUC, Department of Physics, University of Coimbra, Rua LargaC²TN, DECN, Instituto Superior Técnico, University of LisbonCu4O(SeO3)3 is a copper-oxo-selenite belonging to the CuxO(SeO3)(x–1) family of the topological chiral magnet Cu2OSeO3. We report magnetometry and specific heat data measured in a monoclinic Cu4O(SeO3)3 single crystal grown through a Chemical Vapour Transport (CVT) reaction. Our study shows a typical antiferromagnetic behaviour, with a Néel temperature TN = 58 K, similar to that of the Cu2OSeO3 and an additional transition at 13 K. The effective magnetic moment per Cu atom is 1.84 μB, close to the expected theoretical value for Cu2+. The low-temperature M(H) curves, show a transition starting at Hc1 ~ 400 Oe at 1.8 K shifting to a lower value of ~ 280 Oe at 30 K, likely from a helical into a conical intermediate phase, and a second transition at Hc2 ~ 1 kOe, above which the net moment increases linearly with applied field. The magnetisation moment value in a 90 kOe field is 0.053 μB/Cu at 1.8 K and attains a maximum value of 0.061 μB at 13 K. Low-temperature specific heat measurements confirm the presence of the magnetic transition at 13 K, slightly shifting to lower temperatures under an applied magnetic field.https://www.epj-conferences.org/articles/epjconf/pdf/2020/09/epjconf_cmpnc2019_01002.pdf |
| spellingShingle | Malta José F. Henriques Marta S.C. Paixão José A. Gonçalves António P. Magnetic studies of monoclinic Cu4O(SeO3)3, a copper-oxo-selenite derivative EPJ Web of Conferences |
| title | Magnetic studies of monoclinic Cu4O(SeO3)3, a copper-oxo-selenite derivative |
| title_full | Magnetic studies of monoclinic Cu4O(SeO3)3, a copper-oxo-selenite derivative |
| title_fullStr | Magnetic studies of monoclinic Cu4O(SeO3)3, a copper-oxo-selenite derivative |
| title_full_unstemmed | Magnetic studies of monoclinic Cu4O(SeO3)3, a copper-oxo-selenite derivative |
| title_short | Magnetic studies of monoclinic Cu4O(SeO3)3, a copper-oxo-selenite derivative |
| title_sort | magnetic studies of monoclinic cu4o seo3 3 a copper oxo selenite derivative |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2020/09/epjconf_cmpnc2019_01002.pdf |
| work_keys_str_mv | AT maltajosef magneticstudiesofmonocliniccu4oseo33acopperoxoselenitederivative AT henriquesmartasc magneticstudiesofmonocliniccu4oseo33acopperoxoselenitederivative AT paixaojosea magneticstudiesofmonocliniccu4oseo33acopperoxoselenitederivative AT goncalvesantoniop magneticstudiesofmonocliniccu4oseo33acopperoxoselenitederivative |