(Ca,K)(Zn,Mn)2As2: Ferromagnetic semiconductor induced by decoupled charge and spin doping in CaZn2As2

Jinou Dong; Xueqin Zhao; Licheng Fu; Yilun Gu; Rufei Zhang; Qiaolin Yang; Lingfeng Xie; Fanlong Ning

doi:10.1088/1674-4926/43/7/072501

Journals >Journal of Semiconductors >Volume 43 >Issue 7 >Page 072501 > Article

Journal of Semiconductors
Vol. 43, Issue 7, 072501 (2022)

(Ca,K)(Zn,Mn)₂As₂: Ferromagnetic semiconductor induced by decoupled charge and spin doping in CaZn₂As₂

Jinou Dong¹, Xueqin Zhao¹, Licheng Fu¹, Yilun Gu¹, Rufei Zhang¹, Qiaolin Yang¹, Lingfeng Xie¹, and Fanlong Ning^{1、2、3、*}

Author Affiliations

¹Zhejiang Province Key Laboratory of Quantum Technology and Device and Department of Physics, Zhejiang University, Hangzhou 310027, China

²Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China

³State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China

show less

DOI: 10.1088/1674-4926/43/7/072501 Cite this Article

Jinou Dong, Xueqin Zhao, Licheng Fu, Yilun Gu, Rufei Zhang, Qiaolin Yang, Lingfeng Xie, Fanlong Ning. (Ca,K)(Zn,Mn)₂As₂: Ferromagnetic semiconductor induced by decoupled charge and spin doping in CaZn₂As₂[J]. Journal of Semiconductors, 2022, 43(7): 072501 Copy Citation Text

EndNote(RIS)

BibTex

Plain Text

show less

$(Color online) (a) The X-ray diffraction patterns for (Ca1−2xK2x)(Zn1−xMnx)2As2 (x = 0, 0.025, 0.05, 0.1, 0.15, 0.2). Star marks the impurities of KZn4As3. (b) The crystal structure of CaZn2As2. (c) The lattice parameters a and c of (Ca1−2xK2x)(Zn1−xMnx)2As2 (x = 0, 0.025, 0.05, 0.1, 0.15, 0.2). Inset is the volume of (Ca1−2xK2x)(Zn1−xMnx)2As2 (x = 0, 0.025, 0.05, 0.1, 0.15, 0.2). (The standard data are used for x = 0.) (d) The relation of temperature dependent magnetization of Ca(Zn0.9Mn0.1)2As2 measured in the field cooling under 100 Oe. Inset is the plot of 1/(M − M0) versus temperature. The data are marked by hollow dots and the fitting result is plotted by a straight line.$

Fig. 1. (Color online) (a) The X-ray diffraction patterns for (Ca_1−2xK_2x)(Zn₁₋_xMn_x)₂As₂ (x = 0, 0.025, 0.05, 0.1, 0.15, 0.2). Star marks the impurities of KZn₄As₃. (b) The crystal structure of CaZn₂As₂. (c) The lattice parameters a and c of (Ca_1−2xK_2x)(Zn₁₋_xMn_x)₂As₂ (x = 0, 0.025, 0.05, 0.1, 0.15, 0.2). Inset is the volume of (Ca_1−2xK_2x)(Zn₁₋_xMn_x)₂As₂ (x = 0, 0.025, 0.05, 0.1, 0.15, 0.2). (The standard data are used for x = 0.) (d) The relation of temperature dependent magnetization of Ca(Zn_0.9Mn_0.1)₂As₂ measured in the field cooling under 100 Oe. Inset is the plot of 1/(M − M₀) versus temperature. The data are marked by hollow dots and the fitting result is plotted by a straight line.

Download full size | View in the Article

(Color online) (a) The dependence between temperature and DC magnetization for (Ca1−2xK2x)(Zn1−xMnx)2As2 (x = 0.025, 0.05, 0.1, 0.15, 0.2) measured in zero field cooling (ZFC) and field cooling (FC) condition under 100 Oe external field. (b) The first derivative of magnetization versus temperature for (Ca1−2xK2x)(Zn1−xMnx)2As2 (x = 0.025, 0.05, 0.1, 0.15, 0.2). The arrow marks the Curie temperature (TC) of x = 0.05. (c) The reverse of M − M0 versus temperature for (Ca1−2xK2x)(Zn1−xMnx)2As2 (x = 0.025, 0.05, 0.1, 0.15, 0.2). The straight lines are the fitting lines and the hollow symbols are the data dots. The arrow marks the Weiss temperature (θ) of x = 0.05. (d) The iso-thermal magnetic hysteresis measurement for (Ca1−2xK2x)(Zn1−xMnx)2As2 (x = 0.025, 0.05, 0.1, 0.15, 0.2) under 2 K.

Fig. 2. (Color online) (a) The dependence between temperature and DC magnetization for (Ca_1−2xK_2x)(Zn₁₋_xMn_x)₂As₂ (x = 0.025, 0.05, 0.1, 0.15, 0.2) measured in zero field cooling (ZFC) and field cooling (FC) condition under 100 Oe external field. (b) The first derivative of magnetization versus temperature for (Ca_1−2xK_2x)(Zn₁₋_xMn_x)₂As₂ (x = 0.025, 0.05, 0.1, 0.15, 0.2). The arrow marks the Curie temperature (T_C) of x = 0.05. (c) The reverse of M − M₀ versus temperature for (Ca_1−2xK_2x)(Zn₁₋_xMn_x)₂As₂ (x = 0.025, 0.05, 0.1, 0.15, 0.2). The straight lines are the fitting lines and the hollow symbols are the data dots. The arrow marks the Weiss temperature (θ) of x = 0.05. (d) The iso-thermal magnetic hysteresis measurement for (Ca_1−2xK_2x)(Zn₁₋_xMn_x)₂As₂ (x = 0.025, 0.05, 0.1, 0.15, 0.2) under 2 K.

Download full size | View in the Article

Fig. 3. (Color online) (a) The dependence between temperature and DC magnetization for (Ca_1−2yK_2y)(Zn_0.95Mn_0.05)₂As₂ (y = 0.05, 0.1, 0.15, 0.2) measured in zero field cooling (ZFC) and field cooling (FC) condition under 100 Oe external field. (b) The first derivative of magnetization versus temperature for (Ca_1−2yK_2y)(Zn_0.95Mn_0.05)₂As₂ (y = 0.05, 0.1, 0.15, 0.2). The arrow marks the Curie temperature (T_C) of y = 0.15. (c) The reverse of M − M₀ versus temperature for (Ca_1−2yK_2y)(Zn_0.95Mn_0.05)₂As₂ (y = 0.05, 0.1, 0.15, 0.2). The straight lines are the fitting lines and the hollow symbols are the data dots. The arrow marks the Weiss temperature (θ) of y = 0.15. (d) The iso-thermal magnetic hysteresis measurement for (Ca_1−2yK_2y)(Zn_0.95Mn_0.05)₂As₂ (y = 0.05, 0.1, 0.15, 0.2) under 2 K.

Download full size | View in the Article

Fig. 4. (Color online) (a) Resistivity for CaZn₂As₂, Ca(Zn_0.9Mn_0.1)₂As₂ and (Ca_0.8K_0.2)Zn₂As₂ in log scale. (b) Resistivity for (Ca_1−2xK_2x)(Zn_1−xMn_x)₂As₂ for x = 0.025, 0.05, 0.1, 0.15, 0.2 in log scale.

Download full size | View in the Article

y	T_C (K)	θ(K)	M_eff (µ_B/Mn)	M_sat (µ_B/Mn)	H_c (Oe)
0.05	3	4	3.91	0.47	10
0.1	4	5	3.83	0.64	10
0.15	6	7	3.81	0.82	10
0.2	3	2	3.94	0.48	10

Table 0. The Curie temperature T_C, the Weiss temperature θ, the effective moment M_eff , the saturation moment M_sat and the coercive field H_c for (Ca_1−2yK_2y)(Zn_0.95Mn_0.05)₂As₂.

View in the Article

x	T_C (K)	θ (K)	M_eff (µ_B/Mn)	M_sat (µ_B/Mn)	H_c (Oe)
0.05	3	4	3.91	0.47	9
0.1	5	7	2.92	0.28	10
0.15	6	9	2.28	0.15	40
0.2	7	8	1.89	0.06	60

Table 0. The Curie temperature T_C, the Weiss temperature θ, the effective moment M_eff , the saturation moment M_sat and the coercive field H_c for (Ca_1−2xK_2x)(Zn₁₋_xMn_x)₂As₂.

Download Citation

Save the article for my favorites

Paper Information