Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87)
Specific heat measurements in the temperature region from 2 to 50 K in magnetic field up to 10 T, oriented parallel and perpendicularly to the CoO₂ layers were carried out on a series of high-quality single- crystals of NaxCoO₂ (x = 0.73, 0.76, 0.77, 0.78 and 0.87). Surprisingly, sharp lambda type a...
Saved in:
| Published in: | Физика низких температур |
|---|---|
| Date: | 2009 |
| Main Authors: | , , , , , , , , |
| Format: | Article |
| Language: | English |
| Published: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2009
|
| Subjects: | |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/117413 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87) / A. Baran, M. Botko, A. Zorkovská, M. Kajňaková, J.Šebek, E. Šantavá, J.P. Peng, C.T. Lin, A. Feher // Физика низких температур. — 2009. — Т. 35, № 10. — С. 1030-1033. — Бібліогр.: 29 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862545688872615936 |
|---|---|
| author | Baran, A. Botko, M. Zorkovská, A. Kajňaková, M. Šebek, J. Šantavá, E. Peng, J.P. Lin, C.T. Feher, A. |
| author_facet | Baran, A. Botko, M. Zorkovská, A. Kajňaková, M. Šebek, J. Šantavá, E. Peng, J.P. Lin, C.T. Feher, A. |
| citation_txt | Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87) / A. Baran, M. Botko, A. Zorkovská, M. Kajňaková, J.Šebek, E. Šantavá, J.P. Peng, C.T. Lin, A. Feher // Физика низких температур. — 2009. — Т. 35, № 10. — С. 1030-1033. — Бібліогр.: 29 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | Specific heat measurements in the temperature region from 2 to 50 K in magnetic field up to 10 T, oriented parallel and perpendicularly to the CoO₂ layers were carried out on a series of high-quality single- crystals of NaxCoO₂ (x = 0.73, 0.76, 0.77, 0.78 and 0.87). Surprisingly, sharp lambda type anomaly was observed only for the concentration x = 0.76 at temperature (21.80 ± 0.02) K, for all the remaining doping levels round anomaly in experimental data was visible at temperature ~ 20 K, indicating a smeared magnetic phase transition. While the magnetic field oriented perpendicularly to the CoO₂ layers shifts the temperature of this anomaly to lower values, parallel magnetic field has no influence on it, what indirectly supports the idea of A-type antiferromagnetic ordering in studied systems.
|
| first_indexed | 2025-11-25T06:38:33Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-117413 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-25T06:38:33Z |
| publishDate | 2009 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Baran, A. Botko, M. Zorkovská, A. Kajňaková, M. Šebek, J. Šantavá, E. Peng, J.P. Lin, C.T. Feher, A. 2017-05-23T14:08:08Z 2017-05-23T14:08:08Z 2009 Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87) / A. Baran, M. Botko, A. Zorkovská, M. Kajňaková, J.Šebek, E. Šantavá, J.P. Peng, C.T. Lin, A. Feher // Физика низких температур. — 2009. — Т. 35, № 10. — С. 1030-1033. — Бібліогр.: 29 назв. — англ. 0132-6414 PACS: 75.30.Kz, 71.27.+a, 75.40.Cx https://nasplib.isofts.kiev.ua/handle/123456789/117413 Specific heat measurements in the temperature region from 2 to 50 K in magnetic field up to 10 T, oriented parallel and perpendicularly to the CoO₂ layers were carried out on a series of high-quality single- crystals of NaxCoO₂ (x = 0.73, 0.76, 0.77, 0.78 and 0.87). Surprisingly, sharp lambda type anomaly was observed only for the concentration x = 0.76 at temperature (21.80 ± 0.02) K, for all the remaining doping levels round anomaly in experimental data was visible at temperature ~ 20 K, indicating a smeared magnetic phase transition. While the magnetic field oriented perpendicularly to the CoO₂ layers shifts the temperature of this anomaly to lower values, parallel magnetic field has no influence on it, what indirectly supports the idea of A-type antiferromagnetic ordering in studied systems. This work was supported by the grants of Slovak
 Research and Development Agency under the contracts No. APVV-VVCE-0058-07 and No. APVV-0006-07,
 VEGA 1/0159/9, the NSF-0701400 project and the
 Slovak–Serbian bilateral project SK-SRB-01006 and
 AVOZ 10100520. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Низкотемпеpатуpный магнетизм Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87) Article published earlier |
| spellingShingle | Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87) Baran, A. Botko, M. Zorkovská, A. Kajňaková, M. Šebek, J. Šantavá, E. Peng, J.P. Lin, C.T. Feher, A. Низкотемпеpатуpный магнетизм |
| title | Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87) |
| title_full | Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87) |
| title_fullStr | Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87) |
| title_full_unstemmed | Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87) |
| title_short | Heat capacity studies of magnetic phase transition in sodium-rich NaxCoO₂ (0.73 ≤ x ≤ 0.87) |
| title_sort | heat capacity studies of magnetic phase transition in sodium-rich naxcoo₂ (0.73 ≤ x ≤ 0.87) |
| topic | Низкотемпеpатуpный магнетизм |
| topic_facet | Низкотемпеpатуpный магнетизм |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/117413 |
| work_keys_str_mv | AT barana heatcapacitystudiesofmagneticphasetransitioninsodiumrichnaxcoo2073x087 AT botkom heatcapacitystudiesofmagneticphasetransitioninsodiumrichnaxcoo2073x087 AT zorkovskaa heatcapacitystudiesofmagneticphasetransitioninsodiumrichnaxcoo2073x087 AT kajnakovam heatcapacitystudiesofmagneticphasetransitioninsodiumrichnaxcoo2073x087 AT sebekj heatcapacitystudiesofmagneticphasetransitioninsodiumrichnaxcoo2073x087 AT santavae heatcapacitystudiesofmagneticphasetransitioninsodiumrichnaxcoo2073x087 AT pengjp heatcapacitystudiesofmagneticphasetransitioninsodiumrichnaxcoo2073x087 AT linct heatcapacitystudiesofmagneticphasetransitioninsodiumrichnaxcoo2073x087 AT fehera heatcapacitystudiesofmagneticphasetransitioninsodiumrichnaxcoo2073x087 |