TY - JOUR
T1 - Magnetic phase transition and magnetocaloric effect of DyMn2Ge2
AU - Wada, H.
AU - Tanabe, Y.
AU - Hagiwara, K.
AU - Shiga, M.
N1 - Funding Information:
This work was supported by Grain-in-Aid for Developmental Scientific Research (No. 09555185) from the Ministry of Education, Science and Culture.
PY - 2000/8/1
Y1 - 2000/8/1
N2 - We examined magnetocaloric effects of DyMn2Ge2, which shows two successive first-order phase transitions at 36 and 40 K. Above 40 K, DyMn2Ge2 shows the metamagnetic transition in an appropriate magnetic field and large magnetocaloric effects were observed. The magnetization measurements for single crystals have revealed that the intermediate state appearing between 36 and 40 K in zero field is essentially the same as the high-field phase, which is induced by a magnetic field of 7 T at 4.2 K. Anomalous field dependence of isothermal magnetic entropy change was observed. We discuss the origin of anomalous entropy change as well as that of large magnetocaloric effects in connection with the magnetic structure of DyMn2Ge2.
AB - We examined magnetocaloric effects of DyMn2Ge2, which shows two successive first-order phase transitions at 36 and 40 K. Above 40 K, DyMn2Ge2 shows the metamagnetic transition in an appropriate magnetic field and large magnetocaloric effects were observed. The magnetization measurements for single crystals have revealed that the intermediate state appearing between 36 and 40 K in zero field is essentially the same as the high-field phase, which is induced by a magnetic field of 7 T at 4.2 K. Anomalous field dependence of isothermal magnetic entropy change was observed. We discuss the origin of anomalous entropy change as well as that of large magnetocaloric effects in connection with the magnetic structure of DyMn2Ge2.
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U2 - 10.1016/S0304-8853(00)00410-8
DO - 10.1016/S0304-8853(00)00410-8
M3 - Article
AN - SCOPUS:0034250545
SN - 0304-8853
VL - 218
SP - 203
EP - 210
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 2
ER -