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Magnetic torque and heat capacity measurements on TPP[Fe(Pc)(CN)2]2
| Title: | Magnetic torque and heat capacity measurements on TPP[Fe(Pc)(CN)2]2 |
| Authors: | Tajima, Hiroyuki Browse this author | | Yoshida, Gosuke Browse this author | | Matsuda, Masaki Browse this author | | Nara, Kazumi Browse this author | | Kajita, Koji Browse this author | | Nishio, Yutaka Browse this author | | Hanasaki, Noriaki Browse this author | | Naito, Toshio Browse this author →KAKEN DB | | Inabe, Tamotsu Browse this author |
| Keywords: | PACS=75.50.Xx | | PACS=75.30.Gw | | PACS=75.47.De |
| Issue Date: | 1-Aug-2008 |
| Publisher: | American Physical Society |
| Journal Title: | Physical Review. B, Condensed Matter and Materials Physics |
| Volume: | 78 |
| Issue: | 6 |
| Start Page: | 064424 |
| Publisher DOI: | 10.1103/PhysRevB.78.064424 |
| Abstract: | Magnetic torque and heat capacity measurements on TPP[Fe(Pc)(CN)2]2 are reported. The torque curves for the magnetic field rotated within the ab plane have a fourfold symmetry, exhibiting inversions around 13 and 27K. The heat capacity exhibits a broad peak around T=16.5K. By applying the magnetic field along the c axis, the maximum value of the heat capacity is enhanced below 20K. These results, as well as the magnetic susceptibility, were analyzed by employing a numerical calculation based on the anisotropic Heisenberg model in one dimension. The analyses revealed that: (i) the peak in the magnetic-susceptibility data around 25K is due to an antiferromagnetic short-range order (SRO) formation associated with d electrons, and (ii) π electrons fall into an antiferromagnetic state below 13K. The spin-flop field of π electrons is approximately 80kOe at 9K. |
| Rights: | ©2008 The American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/35007 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 稲辺 保
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