【摘 要】
：
In this work,we systematically studied the magnetic and transport properties of EuAg4As2 single crystals.It was found that the two antiferromagnetic transitions
【机 构】
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Hangzhou Key Laboratory of Quantum Matter Department of Physics,Hangzhou Normal University,Hangzhou
【出 处】
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中国科学：物理学 力学 天文学（英文版）
论文部分内容阅读
In this work,we systematically studied the magnetic and transport properties of EuAg4As2 single crystals.It was found that the two antiferromagnetic transitions(TN1 = 10 K and TN2=15 K)were driven to lower temperatures by an applied magnetic field.Below TN1,two successive metamagnetic transitions were observed when a magnetic field was applied in the ab plane(H//ab-plane).For both H∥ab and H//c,EuAg4As2 showed a positive,unexpectedly large magnetoresistance(up to 202％)in lower magnetic fields below TN1,and a large negative magnetoresistance(up to-78％)at high fields/intermediate temperatures,thus presenting potential applications in magnetic sensors.Finally,the magnetic phase diagrams of EuAg4As2 were constructed for both H//ab and H//c using the resistivity and magnetisation data.
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