Cr-based chalcogenide hard magnetic nanomaterial
A technology of chalcogen compounds and nanomaterials, applied in the direction of magnetic properties of inorganic materials, can solve the problem of low coercive force and achieve high coercive force
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[0027] Example 1
[0028] This embodiment provides a Cr-based chalcogenide compound hard magnetic nanomaterial, which is obtained through the following preparation steps:
[0029] (1) Add 1.9mmol Cr(CO) 6 , 0.1mmol of Co(acac) 2 And 30mL oleylamine were added to a four-necked flask equipped with a temperature regulator and a magnetic stirrer to obtain a solution containing Cr and Co. 2 Under protection, heat up to 120℃, keep for 30min;
[0030] (2) Dissolve 3.0 mmol of Te elemental powder in 5 mL of trioctyl phosphate (TOP) to obtain a suspension solution containing Te;
[0031] (3) Inject the suspension solution containing Te into the solution containing Cr and Co. Under the protection of nitrogen, the temperature is increased to 400°C at a heating rate of 5°C / min, and the temperature is kept for 1 hour to obtain Cr. 1.9 Co 0.1 Te 3 Hard magnetic nanomaterials.
Example Embodiment
[0032] Example 2
[0033] This embodiment provides a Cr-based chalcogenide compound hard magnetic nanomaterial, which is obtained through the following preparation steps:
[0034] (1) Add 1.8mmol of Cr(CO) 6 , 0.2mmol of Co(acac) 2 Add 30 mL of oleylamine to a four-necked flask equipped with a temperature regulator and a magnetic stirrer, stir for 20 minutes to obtain a liquid containing Cr and Co, and heat to 110°C under the protection of argon and keep it for 20 minutes;
[0035] (2) Dissolve 3.3 mmol of Te elementary powder in 5 mL of trioctyl phosphate (TOP) to obtain a suspension solution containing Te;
[0036] (3) Inject the suspension solution containing Te into the solution containing Cr and Co. Under the protection of argon, the temperature is raised to 380°C at a heating rate of 3°C / min, and the temperature is kept for 2h to obtain Cr. 1.8 Co 0.2 Te 3 Hard magnetic nanomaterials.
Example Embodiment
[0037] Example 3
[0038] This embodiment provides a Cr-based chalcogenide compound hard magnetic nanomaterial, which is obtained through the following preparation steps:
[0039] (1) Add 1.6mmol of Cr(CO) 6 , 0.4mmol of Co(acac) 2 And 30mL oleylamine were added to a four-necked flask equipped with a temperature regulator and a magnetic stirrer, and stirred for 30 minutes to obtain a solution containing Cr and Co. 2 Under protection, heat up to 100℃, keep for 20min;
[0040] (2) Dissolve 3.6 mmol of Te elemental powder in 5 mL of trioctyl phosphate (TOP) and ultrasonicate for 20 minutes to obtain a suspension solution containing Te;
[0041] (3) Inject the suspension solution containing Te into the solution containing Cr and Co. Under the protection of nitrogen, the temperature is raised to 100°C and then the temperature is raised to 400°C at a heating rate of 2°C / min. The temperature is kept and reacted for 3 hours to obtain Cr 1.6 Co 0.4 Te 3 Hard magnetic nanomaterials.
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