TH13012C3 - Spin Seebeck effect - Google Patents

Abstract

Updated 24/11/2016. The Spin-Seebeck effect measurement device consists of three main parts: 1. A variable magnetic field source, 2. A temperature difference unit, and 3. A potential difference measurement unit. The variable magnetic field source has been developed to be a solenoid coil type and is also temperature adjustable. Furthermore, the potential difference measurement unit can rotate 360 degrees. The Spin-Seebeck effect measurement device is a small, compact, and portable instrument for measuring spin-Seebeck signals in magnetic materials. --------------------- The Spin-Seebeck effect measurement device consists of three main parts: 1. A variable magnetic field source, 2. A temperature difference unit, and 3. A potential difference measurement unit. The variable magnetic field source has been developed to be a solenoid coil type and is also temperature adjustable. Furthermore, the potential difference measurement unit can rotate 360 degrees. The spin-Seebeck effect meter is a small, compact, and portable tool for measuring spin-Seebeck signals in magnetic materials.

Claims (7)

Disclaimer (all) which will not appear on the announcement page: EDIT 24/11/2016 1. The Spin Seebeck effect measuring device consists of 3 parts: the source of the magnetic field. Variable (50) temperature difference unit (30) and potential difference meter (19) adjustable magnetic field source (50) consists of wire (1) core (2) mylar insulator. Mylar (3) Outer wall (5) Wall (7) Helium filling tube (8) Liquid nitrogen filling tube (9) Hollow metal tube (11) Suction tube (12) Pump tube (13) O-ring rubber (O-ring) (14), where the variable magnetic field source (50) is a cylindrical, enclosed, double-walled cylinder consisting of an outer wall (5) and The inner wall (7), where the inner wall (7) is an insulating wall and separates the interior area of the adjustable magnetic field source (50) into two parts: the inner area (4) and the space. The outer (6), where the inner (4) is the area surrounded by the inner wall (7), the inner area (4) is used for filling. Liquid helium, the outer space (6), is the area between the outer (5) and the inner (7), where the outer (6) is used for filling liquid nitrogen, with the inner wall (7) Blocking liquid helium and Liquid nitrogen flows together and acts as a barrier to the heat transmission of liquid helium to liquid nitrogen. In the top cover of the tunable magnetic source (50), a number of helium refill tubes (8) are connected and penetrated into the inner area (4) and liquid nitrogen filled tubes (9). ) A number is connected and penetrated into the outer region (6). In the inner area (4) of the tunable magnetic field source (50), the axis (2) is installed by the axis (2). ) It is a hollow tube with open top end. For the top open end of the rod (2) is connected to the wall. Top of the tunable magnetic field source (50) where the top wall of the tuned magnetic field source (50) has a straight hole through the top opening of the core (2) for inserting a hollow metal tube (11) into the field. magnet Around the core (2), the wire (1) is wrapped around the core (2), between the layers of the coil (1) wrapped around the core (2) there is a Mylar ( 3) The barrier for insulation is on. Windings (1) are coated with liquid solution. Insulating to prevent shock of the circuit on the head and tail of the coil (1) is a Mylar (3) connected to the coil (1) immersed in liquid helium. The coil (1) is in a superconducting state, hollow metal tube (11) is a hollow tube with the top open end. And inserted inside the core (2) by the open end of the hollow metal tube (11) extending from the core (2), the hollow metal tube end (11) that protrusion. The suction hose (12) and the pump hose (13) are connected to which the suction hose (12) and the pump hose (13) are through holes. Into the metal tube (11) by suction tube (12) is a pipe for sucking air inside the hollow metal tube (11) out to vacuum and pump pipe (13) for pumping argon gas. In order for argon gas to expel moisture from the hollow metal tube (11), the hollow metal tube (11) extending from the core (2) is insulated (15) to protect it from heat. Outside for temperature regulation inside hollow metal tube (11) for the top of hollow metal tube (11) There is a groove for inserting the rubber O-ring. (14) as an intermediary to block the contact between the hollow metal tube (11) and the ring (17), one of the components in the measuring unit (30), and the rubber O-ring (4) to prevent air from entering. In the hollow metal tube gap (11), for the hollow metal tube (11), a potential difference meter (30) is inserted. The potential difference meter (30) is a cold conductive metal rod. It consists of a ring (17), a support platform (18), a power cable (20), a core (31) for a ring (17), acting as a barrier to air intake inside a hollow metal tube (11) with the bottom of the ring (17) connected. With one end of the core (31) that looks like a long rod And the other end of the core (31) is connected to the supporting platform (18), which is the temperature-difference unit cradle (19) .For the core area (31), an electrical cable ( 20) A number of devices to connect to. External to receive and transmit signals into the Spin Seebeck effect measuring device for power lines (20), which is an electric wire that connects to a thermocouple. (Thermocouple) (21) and heater (22) of the temperature difference unit (19) to control the operation and transmit the signal. For measuring the potential difference The temperature difference set (19) consists of a thermocouple. (Thermocouple) (21) Heater (22) Hot section (23) Cold section (24) Knots (40) Base (26) Hot section (23) Square shape. It serves as a heat transfer agent to the surface of the test object (27) where the back of the hot part (23) comes into contact with one side of the tested object (27). The hot section (23) is connected to the heater (22) to transmit heat to the hot section (23), keeping the temperature hot and constant. The back surface of the hot part (23) touches the surface of the test object (27) and the back surface of the tested object (27) is connected to the cold part (24) where the cold part (24) looks. Is a square shape that serves Cold remains to the surface below the test object (27), where the cold (24) is cooled by a ring (17), which is transferred from a hollow metal tube (11) controlled by a thermoregulation tube ( 16) For the hot section (23), the cold section (24) and the tested object (27) are bolted together by a number of knots (40) .The back of the cold section (24) is connected to the cradle (26). ) With such a base (26) as part of the set The temperature difference (19) is placed on the support platform (18) of the potential difference meter. Where the temperature difference of the hot part (23) and the cold part (24) has a thermocouple. (Thermocouple) (21) is installed, which is a temperature difference indicator of the hot part (23) and the cold part (24) by transmitting the measured temperature difference to an external reader via the wire (20). Where they are unique The outer surface of the hollow metal tube (11) is wrapped around the thermostat (16), which the thermostat (16) is connected to the cooler. To act as heat exchanger and maintain Vacuum system temperature The back of the cold part (24) will be connected to the cradle (26), with knots (25) to assemble and heat the parts (23), the cold part (24) and the object to be tested (27) that are attached to each other. 360 degree horizontal direction 2. Spin Seebeck effect instrument according to claim 1, where the upper wall of the adjustable magnetic field source (50) is equipped with a handle. (10) A certain amount to hold for transport. Move the Spin Seebeck effect meter. 3. Spin Seebeck effect measurement device according to claim 1 or 2, where the axis (2) is made of metal alloy. (alloy) with a diameter of 25-40 mm 4. Spin Seebeck effect instrument according to claim 1 - 3, where the appropriate hole size within the axis (2) has Diameter 20-30 mm. And length 250-300 mm. 5. Spin Seebeck effect measurement device according to claim 1 - 4, where the wire (1) is a wire. Solenoid wire (Solenoid) is 0.5-1 mm. 6. Measuring device, the Spin Seebeck (Spin Seebeck effect) according to claims 1 - 5, one of which mylar plate. (Mylar) (3) with a thickness of 0.5-1 mm. 7. Spin Seebeck effect measuring device according to Claim No. 1 - 5, where the measure of the potential difference ( 30) It is a metal rod 250-300 mm long --------------------- 1. The Spin Seebeck effect meter consists of three parts: a variable magnetic field source (50), a temperature difference unit (30) and a potential difference meter ( 19) Tunable magnetic field source (50) consisting of wire (1) core (2) mylar insulation (3) outer wall (5) wall (7) helium filling tube (8). Liquid nitrogen filling tube (9) Hollow metal tube (11) Suction tube (12) Pump tube (13) O-ring (14) where the variable magnetic field source (50) is characterized. It is a cylindrical, enclosed, double-walled tank consisting of an outer wall (5) and an inner wall (7). The tunable magnetic field source (50) is divided into two parts: the inner area (4) and the outer space (6), where the inner area (4) is the area surrounding the inner wall (7). Around the area where the inner layer (4) is used for filling. Liquid helium, the outer space (6), is the area between the outer (5) and the inner (7), where the outer (6) is used for filling liquid nitrogen, with the inner wall (7) Blocking liquid helium and Liquid nitrogen flows together and it acts as a barrier to the heat transfer of liquid helium to the liquid mitogen. In the top cover of the tunable magnetic source (50), a number of helium refill tubes (8) are connected and penetrated into the inner area (4) and liquid nitrogen filled tubes (9). ) A number is connected and penetrated into the outer region (6). In the inner area (4) of the tunable magnetic field source (50), the axis (2) is installed by the axis (2). ) It is a hollow tube with open top end. For the top open end of the rod (2) is connected to the wall. The top wall of the tunable magnetic source (50), where the top wall of the tunable magnetic source (50), has a straight-through hole towards the top open end of the core (2) for A hollow metal tube (11) is inserted into the magnetic field. Around the core (2), the wire (1) is wrapped around the core (2), between the layers of the coil (1) wrapped around the core (2) there is a Mylar ( 3) The barrier for insulation is located. Windings (1) are coated with liquid. Insulating to prevent shock of the circuit at the head and the tail of the wire (1) is a Mylar (3) connected to the coil (1) immersed in liquid helium. The coil (1) is in a superconducting state, hollow metal tube (11) is a hollow tube with the top open end. And inserted inside the core (2) by the open end of the hollow metal tube (11) extending from the core (2), the hollow metal tube end (11) that protrusion. The suction hose (12) and the pump hose (13) are connected to which the suction hose (12) and the pump hose (13) are through holes. Into the metal tube (11) by suction tube (12) is a pipe for sucking air inside the hollow metal tube (11) out to vacuum and pump pipe (13) for pumping argon gas. In order for argon gas to expel moisture from the hollow metal tube (11), the hollow metal tube (11) extending from the core (2) is insulated (15) to protect it from heat. Outside for temperature control inside the hollow metal tube (11) .For the top of the hollow metal tube (11), there is a groove for the rubber O-ring (14) to serve as an intermediate barrier between the hollow metal tube (11) and the ring ( 17), which is a component of the differential gauge kit (30), and the O-ring (4) also prevents air from entering the hollow metal tube gap (11). The potential difference meter (30) is included. The potential difference meter (30) is a cold conductive metal rod. It consists of a ring (17), a support platform (18), a power cable (20), a core (31) for a ring (17), acting as a barrier to air intake inside a hollow metal tube (11) with the bottom of the ring (17) connected. With one end of the core (31) that looks like a long rod And the other end of the core (31) is connected to the supporting platform (18), which is the temperature-difference unit cradle (19) .For the core area (31), an electrical cable ( 20) A number of devices to connect to. External to receive and transmit signals into the Spin Seebeck effect meter for electric wires (20), electric wires that connect to the thermocouple. (Thermocouple) (21) and heater (22) of the temperature difference unit (19) to control the operation and transmit the signal. For measuring the potential difference The temperature difference set (19) consists of a thermocouple. (Thermocouple) (21) Heater (22) Hot section (23) Cold section (24) Knots (40) Base (26) Hot section (23) Square shape. It serves as a heat transfer agent to the surface of the test object (27) where the back of the hot part (23) comes into contact with one side of the tested object (27). The hot section (23) is connected to the heater (22) to transmit heat to the hot section (23), keeping the temperature hot and constant. The back surface of the hot part (23) touches the surface of the test object (27) and the back surface of the tested object (27) is connected to the cold part (24) where the cold part (24) looks. Is a square shape that serves Cold remains to the surface below the test object (27), where the cold (24) is cooled by a ring (17), which is transferred from a hollow metal tube (11) controlled by a thermoregulation tube ( 16) For the hot section (23), the cold section (24) and the tested object (27) are bolted together, a number of knots (40) behind the cold section (24) are connected to the cradle (26). ) With such cradle (26) as the component, the temperature difference unit (19) is mounted on the cradle (18) of the potential difference meter. Where the temperature difference of the hot part (23) and the cold part (24) has a thermocouple. (Thermocouple) (21) is installed, which is a temperature difference indicator of the hot part (23) and the cold part (24) by transmitting the measured temperature difference to an external reader via the wire (20). Where they are unique The outer surface of the hollow metal tube (11) is wrapped around the thermostat (16), which the thermostat (16) is connected to the cooler. To act as heat exchanger and maintain Vacuum system temperature The back of the cold part (24) will be connected to the cradle (26), with knots (25) to assemble and heat the parts (23), the cold part (24) and the object to be tested (27) that are attached to each other. 360 degrees 2. Spin Seebeck effect meter according to claim 1, where the upper wall of the variable magnetic field source (50) is equipped with a number of handles (10) for Used to carry Move the Spin Seebeck effect meter. 3. Spin Seebeck effect meter according to claim 1 or 2, where the axis (2) is made of an alloy with a diameter of 25-40 mm. 4. Spin Seebeck effect meter according to any claim 1 - 3 where the appropriate hole size in the axis (2) is 20-30 mm in diameter and 250 in length. -300 mm 5. Spin Seebeck effect meter according to claim No. 1-4, where the wire (1) is a solenoid wire with a size of 0.5. -1 mm 6. Spin Seebeck effect meter according to any claim 1-5 where Mylar (3) with thickness 0.5-1 mm. 7. Spin Seebeck effect meter according to one of the claims 1 - 5, where the potential difference meter (30) is a metal rod 250-300 mm long.