High-pressure diffraction studies on Ca2RuO4
Physical Review B - Condensed Matter and Materials Physics Volume 72 Issue 9
Page 094104-1-094104-7
published_at 2005-09-07
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| File | |
| Title ( eng ) |
High-pressure diffraction studies on Ca2RuO4
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| Creator |
Steffens P.
Friedt O.
Alireza P.
Marshall William G.
Schmidt W.
Nakamura Fumihiko
Nakatsuji Satoru
Maeno Yoshiteru
Lengsdorf R.
Abd-Elmeguid Mohsen M.
Braden Markus
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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 72 |
| Issue | 9 |
| Start Page | 094104-1 |
| End Page | 094104-7 |
| Abstract |
We studied the crystal and magnetic structure of Ca2RuO4 as function of pressure with different diffraction techniques. The first-order phase transition observed at a moderate pressure of P=0.5GPa between the insulating and the metallic high-pressure phase is characterized by a broad region of phase coexistence. The following structural changes are observed as function of pressure: (a) A discontinuous change of both the tilt and rotational angle of the RuO6-octahedra at this transition, (b) a gradual decrease of the tilt angle in the high-pressure phase (P>0.5GPa), and (c) the disappearance of the tilt above 5.5 GPa leading to a higher symmetry structure. The magnetism was studied by single-crystal neutron diffraction: The ferromagnetic component of the high-pressure phase and a rearrangement of antiferromagnetic order in the low-pressure phase have been observed.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2005-09-07 |
| Rights |
Copyright (c) 2005 American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.72.094104
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.61.107
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