Magnetic phase transition in Zn1−xMnxO doped by nitrogen
Sh. U. YuldashevDongguk University 1 Quantum-Functional Semiconductor Research Center, , 3-26 Pildong Chungku, Seoul 100-715, Republic of KoreaKh. T. IgamberdievDongguk University 1 Quantum-Functional Semiconductor Research Center, , 3-26 Pildong Chungku, Seoul 100-715, Republic of KoreaTae-Won KangDongguk University 1 Quantum-Functional Semiconductor Research Center, , 3-26 Pildong Chungku, Seoul 100-715, Republic of KoreaVasiliy PelenovichAcademy of Sciences 2 Department of Thermophysics, , 28 Katartal, Tashkent 700135, UzbekistanA. G. ShashkovInstitute of Heat and Mass Transfer 3 , 15P. Brouki, Minsk 220072, Belarus
ABI
Annotatsiya
The specific heat measurement was used to study the magnetic phase transition in Zn0.95Mn0.05O. The magnetization dependencies on the magnetic field, M(H) curve, and on the temperature, M(T) curve measured by superconducting quantum interference device, indicate the ferromagnetic-paramagnetic phase transition in Zn0.95Mn0.05O doped by nitrogen has a Curie temperature of about 80 K. The temperature dependence of the specific heat reveals a pronounced λ shaped peak at 75 K for the nitrogen-doped sample. Such dependencies indicate a well defined second-order phase transition in this sample.
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