Field-induced martensitic transformation in new ferromagnetic shape memory compound Mn1.07Co0.92Ge

被引：137
作者：
Koyama, K [1 ]
Sakai, M
Kanomata, T
Watanabe, K
机构：
[1] Tohoku Univ, Inst Mat Res, High Field Lab Supercond Mat, Sendai, Miyagi 9808577, Japan
[2] Tohoku Gakuin Univ, Fac Engn, Tagajo, Miyagi, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2004年 / 43卷 / 12期
关键词：
MnCoGe; structural transformation; ferromagnetic shape memory; powder X-ray diffraction; high fields;
D O I：
10.1143/JJAP.43.8036
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The structural transformation of a ferromagnetic Mn1.07CO0.92Ge compound was studied by magnetization measurement in magnetic fields up to 13 T and powder X-ray diffraction measurement in fields up to 5 T. The Curie temperature is determined to be 275 K. At room temperature, the compound has a hexagonal Ni2In-type structure, and it transforms diffusionlessly into an orthorhombic TiNiSi-type structure at Ms = 210 K with hysteresis. The cell volume expands by 5.3% and the magnetic moment increases by 24% at Ms, accompanied with this martensitic structural transformation. In addition, we confirmed for the first time that magnetic field induces the structural transformation in Mn1.07Co0.92Ge at the vicinity of Ms.
引用
收藏
页码：8036 / 8039
页数：4
相关论文
共 13 条
[1]   MAGNETIC-PROPERTIES OF THE COXNI1-XMNGE SYSTEM IN THE HEXAGONAL PHASE [J].
BAZELA, W ;
SZOTT, I ;
SZYTULA, A .
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1982, 69 (01) :K49-K54
[2]   Structural transformation of MnAs1-xSbx under high magnetic fields [J].
Ishikawa, F ;
Koyama, K ;
Watanabe, K ;
Asano, T ;
Wada, H .
MATERIALS TRANSACTIONS, 2004, 45 (02) :311-314
[3]   Field induced structural transformation in MnAs [J].
Ishikawa, F ;
Koyama, K ;
Watanabe, K ;
Wada, H .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 2003, 42 (8A) :L918-L920
[4]   DIFFUSIONLESS ORTHORHOMBIC TO HEXAGONAL TRANSITIONS IN TERNARY SILICIDES AND GERMANIDES [J].
JOHNSON, V .
INORGANIC CHEMISTRY, 1975, 14 (05) :1117-1120
[5]   MAGNETIC FIELD-INDUCED MARTENSITIC TRANSFORMATIONS IN DISORDERED AND ORDERED FE-PT ALLOYS [J].
KAKESHITA, T ;
SHIMIZU, K ;
FUNADA, S ;
DATE, M .
TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS, 1984, 25 (12) :837-844
[6]   Magnetic field-induced martensitic transformation and giant magnetostriction in Fe-Ni-Co-Ti and ordered Fe3Pt shape memory alloys [J].
Kakeshita, T ;
Takeuchi, T ;
Fukuda, T ;
Saburi, T ;
Oshima, R ;
Muto, S ;
Kishio, K .
MATERIALS TRANSACTIONS JIM, 2000, 41 (08) :882-887
[7]   MAGNETOVOLUME EFFECT OF MNCO1-XGE (0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.2) [J].
KANOMATA, T ;
ISHIGAKI, H ;
SUZUKI, T ;
YOSHIDA, H ;
ABE, S ;
KANEKO, T .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 140 :131-132
[8]  
Kanomata T, COMMUNICATION
[9]   THE ELECTRONIC-STRUCTURE OF COMNGE WITH THE HEXAGONAL AND ORTHORHOMBIC CRYSTAL-STRUCTURE [J].
KAPRZYK, S ;
NIZIOL, S .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1990, 87 (03) :267-275
[10]   Effect of high magnetic field on the two-step martensitic-phase transition in Ni2MnGa [J].
Ma, YW ;
Awaji, S ;
Watanabe, K ;
Matsumoto, M ;
Kobayashi, N .
APPLIED PHYSICS LETTERS, 2000, 76 (01) :37-39
12